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March 26, 2026 Get Citation Alerts Download PDF Add Note

State v. Campbell

Idaho Supreme Court

• Citations: None known

• Docket Number: 49269

• Opinion

• Authorities (62)

• Cited By (0)

• Summaries (0)

• Similar Cases (30.6K)

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Combined Opinion

IN THE SUPREME COURT OF THE STATE OF IDAHO

Docket No. 49269

STATE OF IDAHO, )
)
Plaintiff-Respondent, ) Boise, August 2025 Term
)
v. ) Opinion filed: March 26, 2026
)
BENNY DEAN CAMPBELL, ) Melanie Gagnepain, Clerk
)
Defendant-Appellant. ) SUBSTITUTE OPINION. THE
) COURT’S PRIOR OPINION
) DATED JUNE 27, 2024, IS
) HEREBY WITHDRAWN.
)

Appeal from the District Court of the Fourth Judicial District of the State of Idaho,
Ada County. Darla Williamson, Senior District Judge, and Derrik O’Neill, District
Judge.

The order of the district court is affirmed.

Erik R. Lehtinen, State Appellate Public Defender, Boise, for Appellant. Ben P.
McGreevy argued.

Raúl R. Labrador, Idaho Attorney General, Boise, for Respondent. Kale D. Gans
argued.

Federal Defender Services of Idaho and Attorneys of Idaho, Boise, and Law Offices
of B.C. McComas, LLP, San Francisco, California, for Amicus Idaho Association
of Criminal Defense Lawyers.

---

MOELLER, Justice.

This case addresses the scope of the search and seizure protections contained in the Fourth
Amendment to the United States Constitution. While conducting an investigative detention
concerning a stolen motorcycle, an Idaho State Police trooper seized defendant Benny Dean
Campbell and placed him in handcuffs. Upon learning from dispatch that Campbell was on felony
probation, the trooper contacted the Idaho Department of Correction (“IDOC”) to confirm
Campbell’s status. IDOC advised the trooper that Campbell had signed a Fourth Amendment

1
waiver and authorized the trooper to search Campbell’s backpack. The Idaho State Police later
discovered heroin and methamphetamine in Campbell’s backpack. Campbell was charged with
two felony counts for drug trafficking and possession of a controlled substance, and two
misdemeanor counts for possession of a controlled substance and possession of drug paraphernalia.
Campbell filed a motion to suppress the evidence, arguing that by initially placing him in
handcuffs without justification, the trooper converted his detention into an unlawful seizure under
the Fourth Amendment. The district court1 agreed, concluding that Campbell’s detention was
illegal because it was a de facto arrest; however, the court also determined that the evidence
discovered during the subsequent search was still admissible based on the attenuation doctrine,
which is a limited exception to the warrant requirement. After the court denied his motion,
Campbell entered into a conditional plea agreement with the State that allowed him to plead guilty
while preserving his right to appeal the denied motion.
In his initial appeal, Campbell asked this Court to reject the federal attenuation doctrine
because Article I, section 17 of the Idaho Constitution affords him greater protections than the
federal standard and is incompatible with Idaho’s more expansive exclusionary rule. See State v.
Campbell, No. 49269, 2024 WL 3189134 (Idaho June 27, 2024), reh’g granted (Sept. 25, 2024).
After this Court affirmed the district court on a different theory, holding that the evidence was
admissible under the inevitable discovery doctrine, Campbell petitioned for rehearing, which we
granted.
I. FACTUAL AND PROCEDURAL BACKGROUND
At approximately 6:00 a.m. on November 6, 2020, Trooper Andrew D. Weinstein of the
Idaho State Police (“the trooper”) was driving through what he described as a “high-crime area”
in Boise, Idaho. He saw two individuals—a male and female—standing near two motorcycles in
the parking lot of a hotel. Neither motorcycle had a license plate. Both individuals wore backpacks
and they carried motorcycle helmets. They soon walked away towards a nearby gas station. The
trooper drove back by the motorcycles and visually confirmed that both were missing license plates
and observed that one of the motorcycles had been spray painted blue. The trooper found this
suspicious “given the otherwise nice condition of the motorcycle.” After running the visible VIN

1
The decision to deny the motion to suppress was entered by Judge Darla Williamson, Senior District Judge. Later in
the case, District Judge Derrick J. O’Neill was appointed to preside over Campbell’s subsequent proceedings and
signed the judgment of conviction.

2
on the spray-painted motorcycle through dispatch, the trooper learned that it was a stolen vehicle
from Nampa, Idaho, and was originally painted green.
The trooper drove to the gas station where he located the two individuals he saw earlier.
At this time, backup was on the way. The male and female were standing near the front counter of
the station’s convenience store with their backpacks and motorcycle helmets. The trooper walked
into the store and immediately told both individuals to get down on the ground. His gun remained
holstered. The individuals complied, moving to the ground and lying on their stomachs. The
woman asked what was going on. The trooper informed them that one of the motorcycles they
were standing next to earlier was stolen. The woman claimed it was hers, having obtained it from
a storage unit she purchased. The man stated it was not his.
The trooper had the woman stand up and remove her backpack. He then placed her in
handcuffs. The trooper then had the man remove his backpack before placing him in handcuffs.
As the trooper escorted both individuals out of the store, backup from the Boise Police Department
arrived on scene. At his patrol car, the trooper patted down the female. He found a loaded handgun
magazine in her pocket. The female told the trooper that her handgun was in her backpack. He
retrieved their items from the convenience store. He also patted down the male for contraband and
nothing was found. The trooper then placed them both in his patrol car.
The male identified himself as Benny Dean Campbell while the woman identified herself
as Kaycee Noel Suitter. Another Idaho State Police trooper arrived on scene and ran the second
motorcycle’s VIN. It came back clear. On running Campbell and Suitter’s names through dispatch,
the trooper learned that Campbell was on probation. At this point, ten minutes had elapsed since
the trooper’s first contact with Campbell in the convenience store.
Campbell began to dry heave while Suitter told the trooper that she obtained the motorcycle
from a storage unit she purchased. She explained that she had never checked the VIN but had spray
painted the bike blue because she disliked its former color. The trooper asked Campbell if he was
on probation, and Campbell confirmed that he was. Campbell continued dry heaving, so the trooper
removed him from the patrol vehicle and allowed him to sit on the curb. While Boise Police
watched Campbell at the curb, the trooper searched Suitter’s backpack and found a handgun. Boise
Police then informed the trooper that Campbell was claiming to be a confidential informant for
Bonner County.

3
The trooper called IDOC to inform it of the situation and confirm Campbell’s status. After
talking to a probation officer, the trooper learned that Campbell had signed a Fourth Amendment
waiver, meaning that he had previously consented to warrantless searches as a condition of
probation. The probation officer said she would need to contact Campbell’s supervising officer to
confirm whether he was an informant for Bonner County, as he claimed. However, on learning
that Suitter had a handgun, the probation officer authorized the trooper to search Campbell’s
backpack, where he found a black bag containing 112.7 grams of methamphetamine, 15.9 grams
of heroin, a blue silicone pipe with brown residue, a scale, fentanyl, and syringes. Campbell was
charged with two felonies for trafficking in heroin and methamphetamine, as well as two
misdemeanor charges for possession of a controlled substance and possession of drug
paraphernalia.
Campbell filed a motion to suppress the evidence obtained from the search of his backpack,
asserting that his “Fourth Amendment and Article I, § 17 rights were violated when the police
stopped him without reasonable, articulable suspicion, effectuated a de facto arrest, and continued
to hold him against his will.” At the suppression hearing, the trooper testified and explained that
he is POST-certified and had been working as a trooper for the Idaho State Police for four years.
The trooper stated that the area he was in on November 6, 2020, was a high-crime area he
frequently patrolled. He also testified that his observations on the night in question were detailed
in his report and explained that felony stops carry a “higher risk” to officer safety. After
establishing the events of Campbell’s detention, and hearing arguments from the parties on
whether there was a de facto arrest, the district court raised questions on whether an exception to
the exclusionary rule could still permit the evidence to be admitted even if there was an
unreasonable seizure. Following the hearing, the district court requested additional briefing on the
attenuation doctrine.
After reviewing the briefing, the district court issued a written decision denying Campbell’s
motion to suppress the evidence. The court concluded that, although “[the trooper] was authorized
to conduct an investigative detention of [Campbell] and his female companion, to determine their
involvement in the theft of the motorcycle,” he lacked probable cause to make a de facto arrest by
putting Campbell in handcuffs. The district court explained: “the [S]tate presented no evidence
during the suppression hearing that the trooper’s safety was threatened in any way by [Campbell]
or his female companion and there was nothing known about the theft of the motorcycle that would

4
cause it to be considered a violent crime.” Additionally, because the trooper did not know
Campbell was on probation at the time he was placed in handcuffs, the court determined that
Campbell’s Fourth Amendment waiver did not authorize an arrest where there were no obvious
officer safety or flight issues at risk. On this point, the district court added a footnote to its decision,
stating: “The inevitable discovery doctrine also does not assist the State here since there is no
indication that there was a parallel path by which the drug evidence would have been discovered,
apart from [the trooper]’s encounter with [Campbell].”
While acknowledging that these factors “favor[ed] suppression,” the district court
determined that the evidence was still admissible under the attenuation doctrine, which permits
evidence where the “connection between unconstitutional police conduct and the evidence is
remote or has been interrupted by some intervening circumstance.” Utah v. Strieff, 579 U.S. 232,
238 (2016). The court determined that, while there was temporal proximity between the purported
de facto arrest and discovery of the evidence, there was the intervening circumstance of
discovering Campbell’s probation status and getting authorization to search the backpack from the
probation officer. The purpose of the trooper’s actions also weighed in favor of attenuation because
there was no showing “of flagrant or purposeful or systemic misconduct.” (Emphasis omitted.)
“Balancing the relative weights of the factors together,” the court concluded that the trooper “did
not exploit an illegality to discover evidence.” Thus, the court ruled that the evidence should not
be suppressed. Although Campbell argued that the federal attenuation doctrine does not apply in
Idaho because of the greater protections of the Idaho Constitution, the district court determined
that the defense “cited no published Idaho appellate case specifically holding this and State v.
Fenton[, 163 Idaho 318, 413 P.3d 419 (Ct. App. 2017),] makes no mention of this right under the
Idaho Constitution.”
Campbell entered into a conditional plea agreement with the State whereby he would plead
guilty to trafficking in heroin while preserving his right to appeal the denied suppression motion.
In exchange for his plea, the State dismissed his remaining charges. The district court sentenced
Campbell to a unified prison sentence of seventeen years with the first ten years fixed (the
mandatory minimum fixed term set forth in Idaho code section 32-2732B(a)(6)). Campbell timely
appealed his judgment of conviction and order of commitment.
On June 27, 2024, in a three to two decision, this Court affirmed the district court’s
decision, holding that, while there was a de facto arrest, suppression was not necessary because

5
the evidence was admissible pursuant to the inevitable discovery exception to the Fourth
Amendment. Campbell, 2024 WL 3189134. Campbell timely filed a petition for rehearing, which
the Court granted. The Court ordered additional briefing and granted leave to the Idaho Association
of Criminal Defense Lawyers to appear as amicus curiae and submit a brief. Both Campbell and
the amicus urge this Court to reexamine the manner in which it applied the inevitable discovery
doctrine, suggesting that it was incompatible with current Fourth Amendment jurisprudence.

II. STANDARDS OF REVIEW
When reviewing the denial of a defendant’s motion to suppress, this Court applies a
bifurcated standard of review. State v. Marsh, 171 Idaho 627, 630, 524 P.3d 906, 909 (2023); State
v. Bishop, 146 Idaho 804, 810, 203 P.3d 1203, 1209 (2009). “This Court accepts the trial court’s
findings of fact unless they are clearly erroneous but freely reviews the trial court’s application of
constitutional principles to the facts found.” Marsh, 171 Idaho at 630, 524 P.3d at 909 (citation
modified). Findings of fact that are supported by substantial and competent evidence are not clearly
erroneous. Id. at 630–31, 524 P.3d at 909–10.
III. ANALYSIS
Campbell’s primary argument on appeal originally asked this Court to reject the federal
attenuation doctrine, which the district court applied in ruling that the evidence obtained during
the search was admissible, as incompatible with the multiple purposes of Idaho’s exclusionary
rule. In response, the State contended that (1) the trooper had reasonable articulable suspicion to
detain Campbell in handcuffs and, even if he did not, (2) denying the suppression motion was
proper where the evidence would have been inevitably discovered. Campbell then responded by
asserting that (1) the trial court properly determined that this was an illegal de facto arrest and (2)
inevitable discovery was not preserved for appeal because it was never raised below. In our initial
opinion on appeal, this Court agreed that an improper de facto arrest had occurred. However, citing
the right result-wrong theory principle, a three to two majority of the Court held that the district
court properly denied Campbell’s motion to suppress because the evidence Campbell wished to
suppress would have been inevitably discovered.
On rehearing, the parties have understandably repostured their arguments somewhat.
Campbell now maintains that (1) the inevitable discovery doctrine was not preserved for appeal
and, even if it were preserved, (2) the Court improperly applied the inevitable discovery doctrine
to the facts because it requires a separate, lawful investigation to be underway. The State asserts

6
that the evidence in the record is sufficient to demonstrate a parallel path by which the evidence
would have been inevitably discovered.
After carefully reconsidering the matter, we arrive at the same legal conclusion as we did
before and affirm the district court’s denial of Campbell’s motion to suppress. However, in doing
so, this substitute opinion delves deeper into the inevitable discovery doctrine to clarify some
misconceptions that may have crept into our jurisprudence—particularly concerning the alleged
necessity of a separate, independent investigation. But first, we must address the circumstances of
this case that gave rise to our application of the inevitable discovery exception to the Fourth
Amendment warrant requirement—the initial detention.
A. The district court properly concluded that the State failed to establish that placing
handcuffs on Campbell was a reasonable precaution for the trooper’s safety.
Campbell argues that the district court properly concluded that the trooper effectuated an
illegal de facto arrest when he placed Campbell and his companion in handcuffs, arguing that the
trooper “employed a degree of force which exceeded that justified for an investigatory detention,
without any threats to officer safety, alleged violence, or noncompliance on the part of Mr.
Campbell.” The State disagrees, noting “[i]t is uncontested that [the trooper] had reasonable
articulable suspicion to detain Campbell while he investigated the motorcycle theft.” The State
contends that, under the totality of the circumstances, “briefly handcuffing Campbell did not
transform that detention into a de facto arrest.” For the reasons explained below, we conclude that
the district court correctly determined that the State failed to present any evidence during the
suppression hearing that would support a finding that the trooper’s safety was threatened or that
the trooper was concerned for his safety.
The Fourth Amendment to the United States Constitution and Article I, section 17 of the
Idaho Constitution both provide that “[t]he right of the people to be secure in their persons, houses,
papers, and effects, against unreasonable searches and seizures, shall not be violated[.]” U.S.
Const. amend. IV; Idaho Const. art. I, § 17. “A seizure for Fourth Amendment purposes may take
the form of an arrest or an investigatory detention.” State v. Maahs, 171 Idaho 738, 745, 525 P.3d
1131, 1138 (2023). “For an arrest to be considered lawful, it must be based on probable cause.”
State v. Bishop, 146 Idaho 804, 816, 203 P.3d 1203, 1215 (2009) (citation omitted). Investigatory
detentions, however, “are permissible when justified by an officer’s reasonable articulable
suspicion that a person has committed, or is about to commit, a crime.” State v. Huntley, 170 Idaho
521, 526, 513 P.3d 1141, 1146 (2022) (quoting Bishop, 146 Idaho at 811, 203 P.3d at 1210).

7
“When determining whether an arrest or an investigative detention has occurred,” a court
considers “the context of the crime, the stop, and the precautions necessary to an officer’s safety.”
Reagan v. Idaho Transp. Dep’t, 169 Idaho 689, 697, 502 P.3d 1027, 1035 (2021). This is an
objective standard informed by the totality of circumstances in each particular case. United States
v. Cortez, 449 U.S. 411, 417 (1981) (“[T]he whole picture—must be taken into account.”); State
v. Pannell, 127 Idaho 420, 423, 901 P.2d 1321, 1324 (1995). Important factors to consider include:
“the seriousness of the crime, the location of the encounter, the length of the detention, the
reasonableness of the officer’s display of force, and the conduct of the suspect as the encounter
unfolds.” Reagan, 169 Idaho at 697, 502 P.3d at 1035 (quoting State v. Ferreira, 133 Idaho 474,
480, 988 P.2d 700, 706 (Ct. App. 1999)). Specificity is key in justifying an intrusive Fourth
Amendment seizure: a “police officer must be able to point to specific and articulable facts which,
taken together with rational inferences from those facts, reasonably warrant that intrusion.” Terry
v. Ohio, 392 U.S. 1, 21 (1968). “This demand for specificity in the information upon which police
action is predicated is the central teaching of [the United States Supreme] Court’s Fourth
Amendment jurisprudence.” Id. at 21 n.18 (citations omitted).
The need for specificity applies with equal force when evaluating whether the use of
handcuffs converts an investigatory detention into an illegal arrest. Although this Court has held
that “officers are entitled to use handcuffs in limited investigatory stops to maintain their safety,”
State v. DuValt, 131 Idaho 550, 554, 961 P.2d 641, 645 (1998), the State must overcome a “high
threshold” to justify that level of intrusion. Pannell, 127 Idaho at 424, 901 P.2d at 1325. Thus, “in
determining whether the officer acted reasonably in such circumstances, due weight must be given,
not to his inchoate and unparticularized suspicions or ‘hunch,’ but to specific reasonable inferences
which he is entitled to draw from the facts in light of his experience.” DuValt, 131 Idaho at 554,
961 P.2d at 645 (quoting State v. Johns, 112 Idaho 873, 877–78, 736 P.2d 1327, 1331–32 (1987)).
This Court recently considered an officer’s use of handcuffs in Reagan, and determined
that, based upon the totality of the circumstances, an investigative detention was converted into an
illegal de facto arrest. 169 Idaho at 697, 502 P.3d at 1035. In Reagan, a concerned citizen called
police to report a possible intoxicated driver. Id. at 692, 502 P.3d at 1030. Dispatch learned that
the vehicle was registered to Reagan and a police officer was dispatched to her residence. Id. The
officer met Reagan at the door to her home. Id. at 692, 698, 502 P.3d at 1030, 1036. Reagan agreed
to participate in field sobriety tests, and she failed all of them. Id. at 692, 502 P.3d at 1030. “The

8
officer then escorted Reagan to the patrol car, handcuffed her, and placed her in the backseat,
telling her that she was under arrest for DUI.” Id. After completing an administrative license
suspension advisory, and waiting the requisite fifteen minutes, the officer administered a
breathalyzer test, which showed Reagan’s blood alcohol content to be 0.188/0.198. Id. at 692–93,
502 P.3d at 1030–31. “The officer again informed Reagan she was being arrested for driving under
the influence, and transported her to the Bonner County Detention Facility.” Id. at 693, 502 P.3d
at 1031.
This Court concluded that the officer’s use of handcuffs in Reagan “exceeded the bounds
of what was reasonably intrusive in conducting an investigative detention” and “converted the
investigative detention into an arrest.” Id. at 697, 502 P.3d at 1035. We explained that “the
threshold for showing that handcuffs were a reasonable precaution for officer safety is high.” Id.
For Reagan, the use of handcuffs was unwarranted because nothing indicated Reagan posed a
threat to officer safety and “the officer made no attempt to articulate that such a threat even
existed.” Id. The alleged crime did not involve violence, there was no resistance, there were no
known weapons, and Reagan did not threaten the officer. Id. at 697–98, 502 P.3d at 1035–36. This
Court concluded that all these factors taken together made the act of handcuffing Reagan an
excessive intrusion that converted the investigative detention into an arrest. Id. Also important to
this Court’s analysis was that the officer was investigating a misdemeanor offense, and he never
observed Reagan commit “any violation of the law”; yet he informed Reagan twice that she was
“under arrest” before administering the breathalyzer test. Id. at 698, 502 P.3d at 1036. Importantly,
as occurred in State v. Clarke, 165 Idaho 393, 446 P.3d 451 (2019), we again recognized that the
Idaho Constitution did not permit a warrantless arrest for a misdemeanor that the officer did not
witness. Reagan, 169 Idaho at 698, 502 P.3d at 1036.
In contrast, in Johns, we upheld the use of handcuffs, because it “was a reasonable
precaution for the officer’s safety.” 112 Idaho at 878, 736 P.2d at 1332. Johns was a suspected
murderer who, it was believed, had killed the victim with a knife. Id. at 875–76, 736 P.2d at 1329–
30. The officer stopped Johns after seeing him drive away from the victim’s apartment. Id. at 876,
736 P.2d at 1330. The officer was alone when he confronted Johns and “concerned for his own
safety,” knowing that Johns was an armed suspect in a knife killing. Id. at 876–77, 736 P.2d at
1330–31. The officer reported that Johns appeared nervous too, and the officer had already seen
Johns remove a knife from his vehicle. Id. The officer found a second knife when he frisked Johns,

9
and Johns resisted when the officer attempted to remove this weapon. Id. These factors, coupled
with the officer’s testimony, led this Court to conclude that the use of handcuffs was a reasonable
safety precaution and did not convert the investigative stop into a de facto arrest. Id. at 878, 736
P.2d at 1332.
Here, we agree with the district court’s conclusion that the trooper’s explanation for
Campbell’s detention falls short of the “high threshold” required to justify the use of handcuffs
during Campbell’s initial detention. This case undoubtedly has some of the same circumstances
present in both Reagan and Johns, including a solo officer acting during dark hours. Yet this case
is more comparable to Reagan, where a compliant suspect was placed in handcuffs with no
evidence cited by the officer as to his safety. Critically, the district court found that the trooper
never testified to any specific safety concerns when he encountered Campbell and Suitter at the
convenience store, nor did the trooper testify that he handcuffed them for that reason. The closest
the trooper came to explaining why he handcuffed Campbell was on redirect examination when
he was asked by the prosecutor to explain a “felony stop”:
Q. Can you explain what a felony stop is for a stolen bike?
[Objection made and overruled.]
....
A. A typical felony stop involves multiple officers with firearms, pistols and/or
rifles drawn pointed at the individuals, instructing them to get on their knees or
walk backwards, and then placing them in cuffs and securing them into a vehicle.
Q. Why?
A. It’s our training due to safety reasons as it’s usually a higher risk crime.
Even with this limited testimony, it is unclear whether handcuffing Campbell and his
companion was a result of training2 or a specific concern for safety. The trooper also did not testify
whether he considered this investigative detention to involve “a higher risk crime,” or explain why
handcuffs were needed here when other felony stop procedures were not. While the trooper may

2
We have previously expressed concern with the State attempting to justify unconstitutional police conduct on the
mere basis that it was consistent with a department’s standard operating procedure or training. See State v. Saldivar,
165 Idaho 388, 391–92, 446 P.3d 446, 449–50 (2019) (“[T]he district court’s decision appears, at least in part, to be
based on its concerns with the officer’s testimony that ‘it is standard operating procedure . . . to frisk anyone in
handcuffs.’ The district court was justifiably troubled over the constitutional implications of officers replacing the
requisite ‘armed and dangerous’ analysis with a ‘standard operating procedure’ of frisking everyone they detain. We
have similar concerns with such a notion but conclude that, under an objective analysis, the officers in this case had
reasonable, articulable suspicion that Saldivar was armed and dangerous based on the facts of this case.” (alteration
in original)).

10
have had legitimate safety concerns, the State’s failure to present evidence of any specific concerns
for officer safety during the evidentiary hearing has left it for the courts to guess why this trooper
chose to handcuff Campbell. While the State invites us to shore up the trooper’s testimony on
appeal by citing the surrounding circumstances, this is ultimately an invitation to substitute our
own interpretation of the facts for the trooper’s actual testimony. To be sure, the trooper was
outnumbered, present in what he described as a high crime area, and he may have had other safety
concerns as he investigated the stolen motorcycle, but it is the State’s burden to elicit such
testimony from the officer at the suppression hearing, rather than relying on an appellate court to
search the record for an after-the-fact justification of an officer’s actions.
Accordingly, we conclude that the State failed to establish that the use of handcuffs on
Campbell was a reasonable precaution for the trooper’s safety. Campbell’s stop became a de facto
arrest when the suspects were ordered to lie down and were handcuffed. Thus, we affirm this part
of the district court’s analysis.
B. The district court erred in applying the attenuation doctrine because of the close
temporal proximity and the lack of a meaningful intervening circumstance.
Under the attenuation doctrine, “[e]vidence is admissible when the connection between
unconstitutional police conduct and the evidence is remote or has been interrupted by some
intervening circumstance, so that ‘the interest protected by the constitutional guarantee that has
been violated would not be served by suppression of the evidence obtained.’ ” Utah v. Strieff, 579
U.S. 232, 238 (2016) (quoting Hudson v. Michigan, 547 U.S. 586, 593 (2006)). Thus, we must
determine whether the discovery of Campbell’s probation status sufficiently “breaks the causal
chain between the unlawful stop and the discovery of the evidence.” State v. Cohagan, 162 Idaho
717, 721, 404 P.3d 659, 663 (2017).
Under the federal attenuation doctrine, courts consider three factors when determining
whether unlawful conduct was adequately attenuated: “(1) the elapsed time between the
misconduct and the acquisition of the evidence, (2) the occurrence of intervening circumstances,
and (3) the flagrancy and purpose of the improper law enforcement action.” Id. at 721–22, 404
P.3d at 663–64 (first quoting State v. Page, 140 Idaho 841, 846, 103 P.3d 454, 459 (2004); then
citing Brown v. Illinois, 422 U.S. 590, 603 – 04 (1975); and then citing Strieff, 579 U.S. at 239).
Here, the district court found that the discovery of Campbell’s probationary status and his
probation officer’s order to search were significant intervening circumstances that weighed in
favor of attenuation and against suppression.

11
Campbell argues that the federal attenuation doctrine is inapplicable in Idaho because the
purpose and flagrancy factors are incompatible with the purposes of Idaho’s multiple purpose
exclusionary rule.3 He asserts that under a heightened attenuation doctrine, the exception does not
apply here. Further, Campbell requests that this Court adopt the test used by the Washington
Supreme Court. See State v. Mayfield, 434 P.3d 58 (Wash. 2019). However, we need not determine
whether the federal attenuation doctrine is compatible with Idaho’s exclusionary rule because even
under the federal standard, the attenuation doctrine is inapplicable to the facts of this case.
Moreover, principles of constitutional avoidance require us to refrain from answering
constitutional questions that are unnecessary for the resolution of the issue. State ex rel.
Kempthorne v. Blaine County, 139 Idaho 348, 350, 79 P.3d 707, 709 (2003) (“It is also well
established that when a case can be decided upon a ground other than a constitutional basis, the
Court will not address the constitutional issue unless it is necessary for a determination of the
case.” (citing Olsen v. J.A. Freeman Co., 117 Idaho 706, 710, 791 P.2d 1285, 1289 (1990)).
First, applying the three prongs of the federal test for attenuation, we look to the “ ‘temporal
proximity’ between the unconstitutional conduct and the discovery of evidence.” Cohagan, 162
Idaho at 722, 404 P.3d at 664 (alteration omitted) (quoting Strieff, 579 U.S. at 239). If there is
substantial time between the unlawful police conduct and the discovery of the evidence, this factor
favors attenuation. Id. (finding that the few minutes between the illegal stop and the discovery of
drug contraband favored suppression). Notably, less than two hours was deemed an insufficient
interval to purge the taint of unlawful activity in Strieff. 579 U.S. at 239–40. Here, the time elapsed
between the de facto arrest and discovery of the evidence was between ten and fifteen minutes.
We conclude that this factor weighs heavily in favor of suppression.
Second, there must also be an intervening circumstance that has “interrupted” the
unconstitutional conduct. Id. at 721, 404 P.3d at 663 (quoting Strieff, 579 U.S. at 238). Campbell’s
probationary status was discovered while he remained unlawfully handcuffed and the subsequent

3
While the sole purpose of the federal exclusionary rule is to deter police misconduct, Idaho’s exclusionary rule has
multiple purposes, including to:
(1) provide an effective remedy to persons who have been subjected to an unreasonable government
search and/or seizure; (2) deter the police from acting unlawfully in obtaining evidence; (3)
encourage thoroughness in the warrant issuing process; (4) avoid having the judiciary commit an
additional constitutional violation by considering evidence which has been obtained through illegal
means; and (5) preserve judicial integrity.
State v. Plata, 171 Idaho 833, 842, 526 P.3d 1003, 1012 (2023) (citation modified).

12
search followed immediately after. No intervening circumstance arose that was independent of the
constitutional violation, and there was no temporal break or meaningful interruption in the causal
chain. See Taylor v. Alabama, 457 U.S. 687 (1982) (holding that the taking of fingerprints obtained
as part of the arrest was not sufficiently attenuated to purge the taint). Although the officer might
have later discovered Campbell’s probationary status through lawful means, the discovery in this
case occurred during the unlawful arrest itself; therefore, it did not constitute an intervening
circumstance sufficient to attenuate the taint. Because the second prong cannot be met by the State,
we need not consider the third prong, the flagrancy of the officer’s conduct.
For the above-stated reasons we conclude the district court erred in invoking the attenuation
doctrine as grounds for denying the motion to suppress because the taint of the unlawful arrest had
not dissipated. Thus, we need not determine whether the Idaho Constitution contains a higher
standard because the circumstances here are insufficient to meet the federal attenuation doctrine
and any heightened standard would certainly fail as well. While the attenuation doctrine cannot
justify admission of the evidence, we next turn to a doctrine that was considered and rejected by
the district court: the inevitable discovery doctrine.
C. While the initial seizure of Campbell was unreasonable, suppression of the evidence
later obtained was not required because it would have been inevitably discovered.
The State argues that, although it never raised the issue of inevitable discovery below,
application of this exception to the warrant requirement supports the district court’s conclusion
that suppression was not required. It argues that the issue was preserved because “the district court
sua sponte ruled that inevitable discovery would not apply” in its written ruling. Campbell
responds that the State’s inevitable discovery arguments were not properly preserved for appeal
because “the district court’s statements in a footnote to its de facto arrest ruling and a comment in
its attenuation analysis did not constitute an adverse ruling from which the State could appeal.”
Campbell further argues that, even if the issue were preserved, the inevitable discovery doctrine
does not apply because there was no independent line of investigation.
Thus, there are two issues for this Court to consider: first, whether the issue of inevitable
discovery was preserved for appellate review; and second, if preserved, whether the inevitable
discovery doctrine is applicable to the circumstances presented here.

13
1. Because the district court made an express ruling that the inevitable discovery
exception did not apply to this case, the issue was preserved for appeal.
While this Court has explained that it is not bound by erroneous legal rulings, Hooley v.
State, 172 Idaho 906, 914, 537 P.3d 1267, 1275 (2023), proper preservation of a legal theory is
required for this Court to affirm based on the right result-wrong theory rule. State v. Hoskins, 165
Idaho 217, 226, 443 P.3d 231, 240 (2019). We have explained that our preservation rule
fosters the full testing of issues by the adversarial process, ensures that factual
records are fully developed, aids the Court in the correct resolution of cases through
“the refinement of . . . arguments on appeal and the wisdom of the trial court in
deciding the matter in the first instance,” and serves interests of efficiency and
finality.
Carver v. Hornish, 171 Idaho 118, 124, 518 P.3d 1175, 1181 (2022) (quoting State v. Howard,
169 Idaho 379, 385, 496 P.3d 865, 871 (2021)).
We have consistently held that we will not consider issues raised for the first time on appeal
“unless the record discloses an adverse ruling which forms the basis for the assignment of error.”
State v. Yakovac, 145 Idaho 437, 442, 180 P.3d 476, 481 (2008) (quoting Mallonee v. State, 139
Idaho 615, 622–23, 84 P.3d 551, 558–59 (2004)). More recently, we clarified “that a party
preserves an issue for appeal by properly presenting the issue with argument and authority to the
trial court below and noticing it for hearing or a party preserves an issue for appeal if the trial court
issues an adverse ruling.” State v. Miramontes, 170 Idaho 920, 924–25, 517 P.3d 849, 853–54
(2022). “Both are not required.” Id.
Here, at the district court’s request, the parties briefed the attenuation doctrine. Following
the hearing on the motion to suppress, the district court questioned the parties on whether any
exceptions to the exclusionary rule would apply if the court found there was a de facto arrest. Then,
in its written decision, the district court made two statements that touched on the doctrine of
inevitable discovery. First, the court noted in a footnote that “the inevitable discovery doctrine also
does not assist the State here . . . .” This was based on the court’s interpretation of State v. Maxim,
165 Idaho 901, 454 P.3d 543 (2019), and State v. Downing, 163 Idaho 26, 407 P.3d 1285 (2017),
which led it to reject inevitable discovery because “there is no indication that there was a parallel
path by which the drug evidence would have been discovered, apart from [the trooper’s] encounter
with [Campbell].” Yet later, while discussing the State’s attenuation theory, the court made an
apparently inconsistent finding: “If [the trooper] had just detained [Campbell], without
handcuffing him, he would have discovered that he was on probation and had signed a Fourth

14
Amendment waiver, as soon as he conducted the relevant inquiries.” For reasons explained below,
although the second statement was made as part of the court’s separate analysis of the attenuation
doctrine, it supports application of the inevitable discovery exception to the facts of this case.
The district court’s footnoted ruling did not include a lengthy analysis regarding the
inevitable discovery doctrine; however, it did make a definitive ruling on the issue, concluding
that the inevitable discovery doctrine did not apply. The court went on to grant the motion to
suppress on different grounds, ruling that the attenuation doctrine applied. Thus, because the State
prevailed on the suppression motion, albeit under a different theory, it had no reason to appeal the
inevitable discovery ruling. However, once this Court determined that the district court incorrectly
applied the attenuation doctrine to the facts of this case, the district court’s ruling on the inevitable
discovery doctrine became the dispositive ruling in the case. That ruling was unquestionably
adverse to the State. Therefore, although we acknowledge that this is not the typical way issues
are preserved for appeal, we conclude that the applicability of the inevitable discovery doctrine
was decided by the trial court in the first instance. We are mindful of Campbell’s position that this
was not an issue the parties asked the trial court to decide; however, we decline to treat the court’s
footnote as a merely gratuitous statement. Indeed, the trial court improperly elected to apply the
attenuation exception only after it mistakenly concluded that inevitable discovery was
inapplicable.
As noted above, an adverse ruling is one of two ways an issue may be preserved for
appellate review: “a party preserves an issue for appeal if the trial court issues an adverse ruling.”
Miramontes, 170 Idaho at 925, 517 P.3d at 854. Based on the posture of the parties’ arguments on
appeal, the effect of the district court’s ruling on inevitable discovery was adverse to the State.
Accordingly, we hold that the issue of inevitable discovery is preserved for our consideration on
appeal because an adverse ruling by the trial court formed the basis for the State’s assignment of
error on appeal.
2. The district court erred in concluding that the doctrine of inevitable discovery was
inapplicable.
The inevitable discovery doctrine is a recognized exception to the exclusionary rule in
Idaho. Maxim, 165 Idaho at 908, 454 P.3d at 550. It “allows for the admission of evidence that
would have been discovered even without the unconstitutional source,” Utah v. Strieff, 579 U.S.
232, 238 (2016), and applies where “the prosecution can establish by a preponderance of the

15
evidence that the information ultimately or inevitably would have been discovered by lawful
means.” Nix v. Williams, 467 U.S. 431, 444 (1984).
The United States Supreme Court first recognized the inevitable discovery doctrine in Nix.
There, detectives elicited incriminating statements from the defendant about the location of a
missing girl’s body in violation of his Sixth Amendment right to counsel. 467 U.S. at 436–37. The
Supreme Court held that because a search party was closing in on the location of the body before
being called off, the location would have been discovered without the police misconduct. Id. at
448. Explaining its reasoning, the Court stated, “the more apt question in such a case is ‘whether,
granting establishment of the primary illegality, the evidence to which instant objection is made
has been come at by exploitation of that illegality or instead by means sufficiently distinguishable
to be purged of the primary taint.’ ” Id. at 442 (quoting Wong Sun v. United States, 371 U.S. 471,
488 (1963)).
After Nix, the Supreme Court once again examined the inevitable discovery doctrine in
Murray v. United States, 487 U.S. 533 (1988). There, the Supreme Court clarified the reasoning
behind the inevitable discovery doctrine: “Since the tainted evidence would be admissible if in fact
discovered through an independent source, it should be admissible if it inevitably would have been
discovered.” Id. at 539 (emphasis omitted). The dissent succinctly summarized the premise of the
doctrine, noting that, under certain circumstances, the deterrence rationale behind the exclusionary
rule does not “justify the social cost of excluding probative evidence from a criminal trial.” Id. at
544–45 (Marshall, J., dissenting) (first citing Nix, 467 U.S. at 444–46; and then citing United States
v. Leon, 468 U.S. 897, 906–09 (1984)).
a. Neither Nix nor Murray require proof that law enforcement was actively in pursuit
of an independent or parallel investigation.
Although Campbell and the amicus argue that their view of the inevitable discovery
exception—that an independent, parallel investigation is always required—is settled law,
“[w]hether an independent line of investigation is required for the inevitable discovery exception
to apply is a question that has divided the circuits.” United States v. Kennedy, 61 F.3d 494, 498
(6th Cir. 1995). Therefore, we must examine these varying views closely.
Some circuits have interpreted Nix narrowly and only apply the inevitable discovery
doctrine if there are other lawful investigatory paths already underway. Under this interpretation,
the state must prove that it was lawfully pursuing a separate or parallel investigation, in addition

16
to the tainted investigation, that would have inevitably led to the evidence. See, e.g., United States
v. Jackson, 596 F.3d 236, 241 (5th Cir. 2010); United States v. Conner, 127 F.3d 663, 667 (8th
Cir. 1997); United States v. Eng, 971 F.2d 854, 859 (2d Cir. 1992); United States v. Satterfield,
743 F.2d 827, 846 (11th Cir. 1984), superseded by statute, Mandatory Victims Restitution Act of
1996, Pub. L. No. 97-291, 96 Stat. 1255, on other grounds as stated in United States v. Edwards,
728 F.3d 1286 (11th Cir. 2013). These circuits impose two requirements for the inevitable
discovery doctrine to apply: “(1) there is a reasonable probability that the contested evidence would
have been discovered by lawful means in the absence of police misconduct and (2) the Government
was actively pursuing a substantial alternate line of investigation at the time of the constitutional
violation.” Jackson, 596 F.3d at 241; accord Conner, 127 F.3d at 667; Eng, 971 F.2d at 859;
Satterfield, 743 F.2d at 846. In the case at bar, this is the parallel path analysis that the trial court
undertook in ruling out inevitable discovery as a basis for admission of the disputed evidence.
In contrast, many circuit courts have interpreted Nix more broadly and rejected the
requirement of a preexisting alternative path. These circuits have held that the analysis should
“focus on the questions of independence and inevitability[,] and remain flexible enough to handle
the many different fact patterns which will be presented.” United States v. Silvestri, 787 F.2d 736,
746 (1st Cir. 1986); see also United States v. D’Andrea, 648 F.3d 1, 12 (1st Cir. 2011) (stating that
there is “no independent line of investigation” requirement in the First Circuit); United States v.
Vasquez De Reyes, 149 F.3d 192, 195 (3d Cir. 1998) (“It is the government’s burden to show that
the evidence at issue would have been acquired through lawful means, a burden that can be met if
the government establishes that the police, following routine procedures, would inevitably have
uncovered the evidence.”); United States v. Tejada, 524 F.3d 809, 813 (7th Cir. 2008) (holding
that an “attractive middle ground is to require the government, if it wants to use the doctrine of
inevitable discovery to excuse its failure to have obtained a search warrant, to prove that a warrant
would certainly, and not merely probably, have been issued had it been applied for”); United States
v. Larsen, 127 F.3d 984, 987 (10th Cir. 1997) (“Neither the majority opinion in Nix nor our cases
limit the inevitable discovery exception to lines of investigation that were already underway. They
require only that the investigation that inevitably would have led to the evidence be independent
of the constitutional violation.”).
Most circuits, including the Ninth Circuit, appear to have followed this “middle ground”
approach, holding that a separate, untainted investigation is not a per se requirement, provided the

17
State can prove that the evidence would have been inevitability discovered by establishing
historical facts independent of the illegal search. In Boatwright, the Ninth Circuit disavowed a
strict interpretation on Nix, noting that some cases demonstrate inevitability in such a compelling
way “that the exclusionary rule is a mechanical and entirely unrealistic bar, preventing the trier of
fact from learning what would have come to light in any case.” United States v. Boatwright, 822
F.2d 862, 864 (9th Cir. 1987) (holding that there was insufficient evidence to show that the
evidence would have been discovered by a lawful search). “In such cases, the inevitable discovery
doctrine will permit introduction of the evidence, whether or not two independent investigations
were in progress.” Id. However, the facts in the record must be sufficient to justify a
“comprehensive definition” of the inevitable discovery doctrine, and the “doctrine is best
developed on a case by case basis.” Id.; see also United States v. Thomas, 955 F.2d 207, 210–11
(4th Cir. 1992) (adopting Boatwright). Thus, in these circuits, there are two instances in which the
inevitable discovery doctrine applies: “when the government can demonstrate either the existence
of an independent, untainted investigation . . . or other compelling facts establishing that the
disputed evidence inevitably would have been discovered.” Kennedy, 61 F.3d at 499.
We conclude that this middle ground approach, as articulated in Boatright, is the most
faithful application of the holdings in both Nix and Murray. While the facts at issue in Nix involved
a separate investigation already underway, the Supreme Court majority did not suggest that it is a
strict requirement. See Nix, 467 U.S. 431. Instead, the Nix Court required that there be “no
speculative elements” and that inevitability be supported by “historical facts capable of ready
verification or impeachment . . . .” Id. at 444 n.5. The goal of the inevitable discovery exception is
to put “police in the same, not a worse, position that they would have been in if no police error or
misconduct had occurred . . . .” Id. at 443 (emphasis added); see also Murray, 487 U.S. 533. This
approach stays true to the rationale behind the Nix and Murray decisions, while recognizing that
flexibility is necessary to fulfill its purpose in different circumstances.
Despite the amicus curiae’s hyperbolic claims that our original opinion in this case was
“against the great weight of caselaw nationwide,” and that our holding will lead to “pernicious and
sweeping . . . ramifications,” in reality, only a minority of circuits still have the strict requirement
of a separate investigation. Notably, even those circuits have begun to question the soundness of
the requirement. See United States v. Salinas, 543 F. App’x 458, 467 (5th Cir. 2013) (the
independent investigation requirement “may be superfluous”); United States v. Baez, 983 F.3d

18
1029, 1039 (8th Cir. 2020) (recognizing that its application of the requirement has been
inconsistent). Furthermore, the Eleventh Circuit has relaxed the requirement. See United States v.
Watkins, 13 F.4th 1202, 1211 (11th Cir. 2021) (“ ‘Active pursuit’ in this sense does not ‘require
that police have already planned the particular search that would obtain the evidence’ but only
‘that the police would have discovered the evidence by virtue of ordinary investigations of
evidence or leads already in their possession.’ ” (quoting United States v. Johnson, 777 F.3d 1270,
1274 (11th Cir. 2015), overruled on other grounds by United States v. Watkins, 10 F.4th 1179
(11th Cir. 2021))).
In addition to the federal circuit courts, it is also worth noting that many state supreme
courts have also rejected a strict requirement for a separate, independent investigation. See, e.g.,
State v. Topanotes, 76 P.3d 1159, 1163–64 (Utah 2003); Garnett v. State, 308 A.3d 625, 649 (Del.
2023); State v. Jackson, 882 N.W.2d 422, 439 (Wis. 2016); Commonwealth v. Jones, 593 S.E.2d
204, 208 (Va. 2004); Miller v. State, 27 S.W.3d 427, 432 (Ark. 2000); People v. Carpenter, 988
P.2d 531, 546 (Cal. 1999); State v. St. Yves, 751 A.2d 1018, 1023 (Me. 2000); State v. Paxton, 925
P.2d 721, 725–26 (Ariz. Ct. App. 1996); Oken v. State, 612 A.2d 258, 271 (Md. 1992); State v.
Garner, 417 S.E.2d 502, 507–08 (N.C. 1992).
For these reasons, we hold that a finding that there was a lawful separate or independent
investigation underway is not a per se requirement in every case for the inevitable discovery
doctrine to apply. While a separate, untainted investigation may be the simplest way to establish
this exception, we conclude that there are other situations that may still make the discovery
inevitable. However, as discussed below, to remove the taint of illegal activity, the government
must still prove that the discovery was inevitable from situations not revealed by the unlawful
activity itself.
b. This standard is consistent with Idaho precedent.
Although past Idaho cases addressing the inevitable discovery doctrine have typically
featured a second parallel investigation, this Court has never held that a separate, independent
investigation is a requirement. Today, we clarify that an alternative way to establish an inevitable
discovery exception under Nix has always existed, we have just not previously been asked to
address it.
We have previously held that “the inevitable discovery exception does not permit us to
speculate on the course of action the investigation could have taken in the absence of [the

19
Constitutional violation]—even if that alternate course likely would have yielded the evidence.”
State v. Maxim, 165 Idaho 901, 909, 454 P.3d 543, 551 (2019) (alteration in original) (quoting
State v. Downing, 163 Idaho 26, 32, 407 P.3d 1285, 1291 (2017)). “The doctrine must presuppose
inevitable hypotheticals running in parallel to the illegal actions, not in series flowing directly from
the officers’ unlawful conduct.” Downing, 163 Idaho at 32, 407 P.3d at 1291 (emphasis added). In
Maxim, this Court explained that the ultimate question that must be asked for the inevitable
discovery doctrine to apply is “whether the State can prove that the evidence in question would
have been inevitably discovered even if the police illegality is removed from the equation.” 165
Idaho at 909, 454 P.3d at 551 (emphasis added). The defendant in Maxim moved to suppress
evidence that was discovered after police unlawfully entered his girlfriend’s apartment and
searched him. Id. at 903, 454 P.3d at 545. The district court denied his motion to suppress, finding
that the evidence would have been inevitably discovered. Id. at 904, 454 P.3d at 546. Although the
police conducted a warrantless search, the district court explained that the owner of the apartment
complex would have eventually allowed the police to enter the premises, and that police still would
have found and searched Maxim. Id. at 904, 909, 454 P.3d at 546, 551.
On appeal, this Court criticized the district court’s heavy reliance on “prolonged timelines
that could not have accounted for all the permutations of possible events.” Id. at 909, 454 P.3d at
551. We used the example of branching parallel paths:
A police investigation often takes branching paths. The inevitable-discovery
doctrine presupposes parallel paths leading toward the inevitable discovery of
evidence. If, because of illegal police action, one path arrives at the evidence before
the other does, then the State will be permitted to prove that the existing alternative
path would have yielded the evidence even if the existing alternative path was cut
short due to the discovery of the evidence. However, the split in the investigation
which creates these parallel paths must occur prior to or independent of the
illegality, not because of it. The question is not what legal path the police would
have inevitably taken which could have yielded the evidence. The question is what
legal path the police actually took which would have inevitably yielded the
evidence. We again stress the astute observation of our Court of Appeals: “The
inevitable discovery doctrine ‘is not intended to swallow the exclusionary rule
whole by substituting what the police should have done for what they really did.’ ”
Id. (citations omitted and emphasis added). Critically, because the police failed to secure a search
warrant, the investigation was rendered unlawful from its inception. Id. at 908, 454 P.3d at 550.
Thus, there was no evidence of any legal path which would have yielded the evidence. Id.

20
Campbell and the amicus argue that this Court’s approach in our initial opinion on appeal,
and presumably that of the Ninth Circuit, is a drastic departure from Idaho precedent established
in Maxim, and will cause the Fourth Amendment to “be a dead letter in Idaho.” The State responds
that Maxim is distinguishable from the present case because the police misconduct occurred at
different points in each respective investigation. We are more persuaded by the State’s argument.
In cases like Maxim, when an investigation is constitutionally tainted from the start, only
an independent parallel investigation can sufficiently sever it from the illegal conduct so that law
enforcement may legally discover the evidence. Here, unlike in Maxim, the trooper had
independent reasonable suspicion that a crime had been committed when he observed two
motorcycles without license plates and noticed that one had been spray painted. Before he followed
the suspects into the convenience store, he confirmed through dispatch that the painted motorcycle
had been reported as stolen. Thus, the trooper had already begun a lawful investigation before any
illegality occurred. This is vastly different from the facts in Maxim where all the evidence was
gathered as a direct result of unlawful activity and there was no preceding or independent path
aside from the tainted investigation. 165 Idaho at 909–10, 454 P.3d at 551–52.
In conclusion, Maxim and Downing represent two cases where an active, independent line
of investigation was necessary to show that the evidence would have been inevitably discovered
apart from unlawful police activity because the unlawful conduct occurred at the inception of the
investigations. However, as discussed above, these holdings do not require a completely separate
investigation in every case. Unlike the case at hand, there were no compelling facts in Maxim or
Downing establishing that the disputed evidence inevitably would have been discovered absent the
police misconduct.
c. Applying the proper standard, the evidence Campbell wishes to suppress would
have been inevitably discovered independent of the intervening unlawful police
conduct.
Having established that an independent investigation is not the only pathway to applying
the inevitable discovery doctrine, we turn to the arguments regarding its application to the current
case. The State is correct that the question is not “whether discovery was inevitable apart from the
encounter with Campbell,” but “whether discovery was inevitable apart from the alleged
illegality—the handcuffing that created the purported de facto arrest.” (Emphasis in original). It is
undisputed that the trooper had authority and reasonable suspicion to conduct an investigative
detention based on his discovery that the motorcycle was stolen. Both parties delve into

21
hypotheticals of whether the trooper would have inquired into Campbell’s probation status, but the
district court’s early finding on this issue holds true: “If [the trooper] had just detained [Campbell],
without handcuffing him, he would have discovered that he was on probation and had signed a
Fourth Amendment waiver, as soon as he conducted the relevant inquiries.” Inasmuch as we agree
with this finding of the district court, we affirm its decision to suppress, albeit on a different theory.
Importantly, in conducting an inevitable discovery analysis, some conjecture by this Court
is unavoidable in determining what “inevitably would have been discovered” had the illegality not
occurred. See Downing, 163 Idaho at 31, 407 P.3d at 1290 (quoting Nix, 467 U.S. at 444). Of
course, such conjecture may not be based on mere speculation. Rather, it must be based on
“demonstrated historical facts capable of ready verification or impeachment,” as required by Nix.
467 U.S. at 444 n.5. In the case now before us, this is demonstrated by logically following the path
that was taken. The fork in the road occurred at the point the trooper entered the convenience store
and (1) ordered the defendant to get on the ground and (2) placed him in handcuffs. This is when
an illegal de facto arrest took place. Assuming the trooper had merely detained and questioned
Campbell without making a de facto arrest, the trooper would have still inevitably learned
Campbell’s name and called it in to dispatch. Then, the trooper would have inevitably discovered
that Campbell was on probation. Next, just as occurred, the trooper would have inevitably
contacted Campbell’s probation officer to report that Campbell was being detained during the
investigation into a possible felony (a stolen vehicle). Under these circumstances, we conclude
that the probation officer would have inevitably authorized a search of the backpack. This
depiction of the steps that would have inevitably occurred is neither conjecture nor speculation
because this is what actually occurred, and the de facto arrest did nothing to facilitate any of these
steps.
Despite Campbell’s assertion that there is no evidence of what would have happened
without the de facto arrest, the record is clear that the trooper still would have discovered that
Campbell was on probation. The trooper testified that pursuant to his investigatory detention, he
asked for Campbell’s name and called it in to dispatch, as he always does. Through dispatch, he
discovered that Campbell was on probation and called the on-call probation officer, which he
testified was part of his normal routine. He further testified that he always identifies each individual
during an investigation, so that he can log it into an accurate report. None of these actions are tied
exclusively to his decision to place Campbell in handcuffs. This series of events would have

22
occurred regardless of the de facto arrest or the discovery of the loaded magazine on Campbell’s
companion. In sum, logic and the “historical facts capable of ready verification or impeachment”
all establish that the evidence Campbell wishes to suppress would have been inevitably discovered.
Nix, 467 U.S. at 444 n.5.
Contrary to Campbell’s claim that this conclusion is “the definition of speculation,” it
would require much more speculation to imagine a reality where these events would not have
occurred. Indeed, given the undisputed facts in the record, it is difficult to fathom an alternate path
where the trooper would not have learned Campbell’s name, would not have discovered that he
was on felony probation, and would not have contacted his probation officer. Upon being made
aware that Campbell was the subject of a felony investigation, it is highly unlikely that any
probation officer would not have authorized a search of Campbell’s backpack. The fact that
Campbell happened to be handcuffed when each of these steps were taken does not undermine the
conclusion that they would have inevitably occurred regardless of whether a de facto arrest had
taken place. Thus, it is not a matter of mere speculation but of reasoned judgment, based on the
historic facts in the record, for us to conclude that law enforcement would have discovered the
same evidence in Campbell’s backpack under either path branching from the moment the trooper
walked into the convenience store.
Under these circumstances, the inevitable discovery doctrine—a well-established
exception to the Fourth Amendment warrant requirement—makes suppression of the evidence
improper. While the district court ultimately admitted the evidence under an attenuation analysis,
its analysis appears at times to have conflated inevitable discovery with attenuation—rejecting one
Fourth Amendment exception for the other. Inasmuch as the inevitable discovery issue was
preserved, and that exception squarely applies to the facts of this case, we conclude that the district
court reached the correct conclusion that the evidence from Campbell’s backpack should have
been admitted, albeit by the wrong theory. “Where an order of a lower court is correct, but based
upon an erroneous theory, the order will be affirmed upon the correct theory.” State v. Hoskins,
165 Idaho 217, 222, 443 P.3d 231, 236 (2019) (quoting Andre v. Morrow, 106 Idaho 455, 459, 680
P.2d 1355, 1359 (1984)). Accordingly, we affirm the district court’s order denying Campbell’s
suppression motion on the alternate theory of inevitable discovery.

23
Because our ruling is based on the inevitable discovery doctrine, which is dispositive of
the case at hand, we need not address Campbell’s argument that the federal test for attenuation is
inconsistent with Idaho’s constitutional protections.
IV. CONCLUSION
We conclude that the district court did not err in denying Campbell’s motion to suppress,
notwithstanding its application of the wrong theory. Because the inevitable discovery doctrine
plainly applies to the facts of this case, we affirm the order of the district court and Campbell’s
resulting judgment of conviction.
Chief Justice BEVAN, Justices BRODY and MEYER CONCUR.

ZAHN, J., dissenting.
I fully concur in Sections III.A and III.B of the majority opinion. However, I respectfully
dissent from Section III.C of the opinion, which affirms the district court’s order denying
Campbell’s motion to suppress on the basis of inevitable discovery, which was not the basis for
the district court’s decision. I would conclude that the State’s inevitable discovery argument was
not properly preserved, would decline to address it, and would reverse the district court’s decision
on the basis that it erred in concluding that the attenuation doctrine applied here.
The State concedes that it did not raise inevitable discovery below. As a result, whether the
argument is properly preserved for appeal turns on whether the trial court issued an adverse ruling.
The majority opinion ignores the word “adverse” and substitutes “definitive” in its place,
essentially holding that a statement by the district court, which did not form the basis for its
decision denying Campbell’s motion, was sufficient to preserve the issue for appeal. That is not
the holding in State v. Miramontes, 170 Idaho 920, 517 P.3d 849 (2022), and is not a faithful
application of our preservation jurisprudence.
The purported “definitive ruling” that the majority opinion relies upon is a single sentence
contained in a footnote. That footnote is connected to the district court’s analysis concerning the
legality of handcuffing Campbell and placing him in the back of the trooper’s car:
At the time of the defendant’s arrest (placement in handcuffs and placing
him in the patrol car), [the trooper] did not know that the defendant was on
probation. Consequently, pursuant to Maxim, the defendant’s Fourth Amendment
waivers do not assist [the trooper], in terms of the authorization for his arrest. 12
Footnote 12 contains the alleged “definitive ruling” concerning the inevitable discovery exception:

24
12
The inevitable discovery doctrine also does not assist the State here since there is
no indication that there was a parallel path by which the drug evidence would have
been discovered, apart from [the trooper’s] encounter with the defendant. See State
v. Maxim, 165 Idaho 901, 909, 454 P.3d 543, 551 (2019) (emphasis in original).
Only the first sentence of the footnote contains the district court’s words. The remainder is an
explanatory parenthetical that block quotes our decision in Maxim. When put in context, this single
sentence by the district court is merely an aside. The district court’s observation was so unrelated
to its discussion that the observation was relegated to a footnote. It was not a definitive ruling on
anything, much less an adverse ruling that formed the basis of Campbell’s appeal.
Once Campbell established that: (1) he was subjected to an illegal de facto arrest and (2) a
factual nexus existed between the illegal arrest and the State’s acquisition of the evidence he sought
to suppress, the burden shifted to the State to demonstrate an exception applicable to the
exclusionary rule. State v. Vivian, 171 Idaho 79, 83–84, 518 P.3d 378, 382–83 (2022). The only
exception argued by the State was the attenuation doctrine. That doctrine was the sole basis for the

25
district court’s adverse ruling that is the subject of this appeal. As a result, that is the only theory
properly preserved for appeal.
The majority opinion misapplies the “adverse ruling” standard from our preservation
caselaw to decide Campbell’s appeal based on a theory that was not advanced by the State below,
to which Campbell did not have an opportunity to present evidence or argument, and which did
not form the basis for the district court’s adverse ruling denying Campbell’s motion to suppress.
As a result, Section III.C of the majority opinion fails to properly apply our preservation
jurisprudence. I therefore respectfully dissent from Section III.B of the majority opinion.

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