
188 P.3d 378 (2008)
220 Or. App. 606
STATE of Oregon, Plaintiff-Respondent,
v.
Erin Albert AYLES, Defendant-Appellant.
051228; A132029.
Court of Appeals of Oregon.
Argued and Submitted on April 30, 2008.
Decided June 25, 2008.
*379 David Ferry, Deputy Public Defender, argued the cause for appellant. With him on the brief was Peter Gartlan, Chief Defender, Office of Public Defense Services.
Janet A. Metcalf, Assistant Attorney General, argued the cause for respondent. With her on the brief were Hardy Myers, Attorney General, and Mary H. Williams, Solicitor General.
Before HASELTON, Presiding Judge, and ARMSTRONG, Judge, and ROSENBLUM, Judge.
HASELTON, P.J.
Defendant appeals a judgment of conviction for possession of a substantial quantity *380 of a controlled substance. Former ORS 475.992(4)(b) (2003). He assigns error to the trial court's denial of his motion to suppress evidence discovered during a search of his person and a subsequent search of his backpack during a traffic stop.[1] We agree with defendant that the evidence obtained was the unattenuated product of exploitation of an unlawful stop of defendant in violation of his rights under Article I, section 9, of the Oregon Constitution. Accordingly, we conclude that the trial court erred in not suppressing the evidence, State v. Hall, 339 Or. 7, 115 P.3d 908 (2005), and reverse and remand.
We take the facts from the trial court's written findings and from the record.[2] Defendant was a passenger in a car that was lawfully stopped because it did not have a front license plate and because the driver was speeding. Hunt, the state trooper who stopped the car, very quickly suspected that the driver was under the influence of methamphetamine. While Hunt was questioning the driver about whether she had any methamphetamine in the car, defendant spoke up and asked Hunt how they could "rectify" the license plate situation "so that they would stop getting stopped." Hunt thought that defendant's question was suspicious and that defendant was "over friendly" and talkative. He asked defendant for his identification. Defendant gave Hunt a Veteran's Administration card, which Hunt took and put in his patrol car. The trial court found that, at the time Hunt asked for and obtained defendant's identification, he did not have a reasonable suspicion of criminal activity on defendant's part or of an immediate threat to his safety.
Hunt then returned to the car in which defendant was seated, asked the driver to get out and then frisked her, and had her sit on the bumper of the car.[3] Hunt then went back to his patrol car and ran a computer check on both the driver and defendant. Neither had any outstanding warrants. Hunt next asked defendant if he would "mind stepping out of the car and talking to me." Defendant agreed. Hunt had defendant walk to the rear of his patrol car and first asked him if he had any weapons. When defendant indicated that he did not, Hunt asked if he could pat him down, and defendant agreed. Hunt testified that defendant's identification was still in the patrol car at that time.[4] While conducting the patdown, Hunt discovered a clear prescription pill container with a plastic bag on the inside, which he suspected, based on his training and experience, contained illegal drugs. When asked, defendant admitted that the container contained methamphetamine. At that point, Hunt handcuffed defendant, placed him under arrest, read him his Miranda rights, and put him in the patrol car.
Thereafter, Hunt also arrested the driver, for suspicion of driving under the influence of intoxicants, and asked the other passengers to get out of the car so that he could search it. One of those passengers pointed out that there was a blue backpack in the car that belonged to defendant. Hunt asked defendant to step out of the patrol car and asked him if the backpack was his. Defendant admitted that it was. Hunt then asked him if there was any more methamphetamine in the backpack. Defendant said that there *381 was and told Hunt that it contained another pill bottle with more methamphetamine in it and a glass pipe. Hunt looked in the backpack and found a prescription pill bottle with methamphetamine inside, a glass pipe, and a propane tank.
Defendant moved to suppress all of the evidence obtained after Hunt obtained defendant's identification. The trial court denied the motion, concluding that the officer's actions in taking defendant's identification and asking him to get out of the car did not constitute an unlawful stop of defendant. In its discussion of the subsequent search of defendant's person, the court noted, however, that
"[i]f the officer's obtaining identification or asking defendant to exit the vehicle was considered a violation, exploitation becomes an issue. In this case, Hall would require suppression. Defendant's identification was held during the stop where a reasonable person would not feel free to leave. The consent for search was in close proximity to obtaining defendant's identification and asking him to exit. The state did not produce any evidence regarding inevitable discovery, independent discovery or a tenuous factual link that would still allow the search."
The court also stated that the subsequent search of defendant's backpack was authorized either as a search incident to defendant's arrest or under the automobile exception to the warrant requirement.
Following a stipulated facts trial, defendant was convicted of possession of 10 grams or more of a Schedule II controlled substance. Former ORS 475.992(4)(b). This appeal followed.
On appeal, defendant reasserts his argument that he was unlawfully seized in violation of Article I, section 9, of the Oregon Constitution when Hunt took his identification and put it in the patrol car without reasonable suspicion of criminal activity or that defendant posed an immediate threat to his safety.[5] He contends that the evidence discovered during the patdown and, subsequently, in defendant's backpack, was obtained in exploitation of that illegality and, therefore, under Hall, it must be suppressed.
The state concedes that, under the circumstances, the taking and retaining of defendant's identification amounted to an unlawful seizure of defendant under Article I, section 9. We accept that concession as well-founded and conclude that the trial court erred by ruling to the contrary. See State v. Thompkin, 341 Or. 368, 378-79, 143 P.3d 530 (2006) (unlawful seizure under Article I, section 9, occurred when one officer requested and retained the defendant's identification to conduct a records check while another officer questioned defendant concerning drugs and weapons); State v. Rider, 216 Or.App. 308, 313, 172 P.3d 274 (2007) ("Both this court and the Supreme Court have repeatedly held that, when an officer retains a person's identification for investigatory purposes during questioning, the person is restrained from leaving."); State v. Holcomb, 202 Or.App. 73, 121 P.3d 13, adh'd to as modified on recons., 203 Or.App. 35, 38, 125 P.3d 22 (2005) (obtaining the defendant's identification and retaining it while conducting a warrant check effected a stop).
The state does, however, dispute defendant's contention that suppression of the evidence is warranted because it was obtained in exploitation of the unlawful stop. In particular, the state argues that (1) defendant has not shown the requisite causal connection between the evidence discovered during the patdown search and, later, in his backpack, and the prior unlawful police conduct and (2) even if defendant did establish such a connection, the giving of Miranda warnings sufficiently attenuated the taint of the unlawful police conduct. We disagree with the state in both respects.
*382 Evidence obtained from a consensual search is subject to suppression under Article I, section 9, if the defendant's consent is the product of unlawful police conduct. As the Supreme Court explained in Hall:
"After a defendant shows a minimal factual nexus between unlawful police conduct and the defendant's consent, then the state has the burden to prove that the defendant's consent was independent of, or only tenuously related to, the unlawful police conduct. Deciding whether the state has satisfied that burden requires a fact-specific inquiry into the totality of the circumstances to determine the nature of the causal connection between the unlawful police conduct and the defendant's consent. A causal connection requiring suppression may exist because the police sought the defendant's consent solely as the result of knowledge of inculpatory evidence obtained from unlawful police conduct. A causal connection requiring suppression also may exist because the unlawful police conduct, even if not overcoming the defendant's free will, significantly affected the defendant's decision to consent. Although determining the existence of such a causal connection requires examination of the specific facts at issue in a particular case, we view several considerations to be relevant to that determination, including (1) the temporal proximity between the unlawful police conduct and the defendant's consent, (2) the existence of any intervening circumstances, and (3) the presence of any circumstancessuch as, for example, a police officer informing the defendant of the right to refuse consentthat mitigated the effect of the unlawful police conduct."
339 Or. at 34-35, 115 P.3d 908. That methodology also applies to evidence obtained in response to an officer's questioning during an unlawful stop. Thompkin, 341 Or. at 381, 143 P.3d 530.
According to the state, defendant did not establish the requisite "but for" relationship under Hall. That is so, the state reasons, because
"[t]here is no reason to suppose that the fact that the trooper took and retained defendant's ID had any effect on the trooper's request that defendant consent to a patdown or on his question to defendant about what was in the backpack, or that taking and retaining defendant's ID had any effect on [defendant's] decision to consent to the patdown or to admit that he had additional methamphetamine in his backpack."
We disagree with the state's reasoning. "But for" the illegal stop, Hunt would not have been in a position to ask for defendant's consent to search him, nor would he have asked him what was in the backpack, and he would not therefore have discovered the methamphetamine. That connection is sufficient to satisfy the minimal factual nexus required under Hall. See State v. Rodgers, 219 Or.App. 366, 374, 182 P.3d 209 (2008) (concluding that requisite causal nexus was established where, "but for the unlawful seizure, [the police officer] would not have been in a position to request consent"); see also State v. Kirkeby, 220 Or.App. 177, 187, 185 P.3d 510 (2008); State v. La France, 219 Or.App. 548, 557, 184 P.3d 1169 (2008). Accord State v. Highley, 219 Or.App. 100, 110-11, 180 P.3d 1230 (2008) (where the defendant was a passenger in a car that was lawfully stopped and the officer had returned the defendant's identification before asking for consent, minimal factual nexus requirement satisfied by the close temporal proximity between the subsequent illegal stop of the defendant and the request for consent to search).
The burden thus shifts to the state to prove that defendant's consent was "independent of, or only tenuously related to" the illegal stop. Hall, 339 Or. at 35, 115 P.3d 908; State v. Tyler, 218 Or.App. 105, 110, 178 P.3d 282 (2008) (once a minimal factual nexus is demonstrated, the state must establish either that the consent would have occurred "independent of" the illegality or that the connection between the unlawful stop and the consent is attenuated; if state cannot establish independence, it must prove attenuation). We first consider whether the state has satisfied that burden with respect to defendant's consent to the officer's request for permission to search him. As in Hall, the request for consent to search defendant here occurred *383 in close temporal proximity to the unlawful detention; the state does not argue otherwise. Moreover, the state has not demonstrated the existence of any intervening circumstances or other factors that might mitigate the effect of the illegal detention of defendant. Accordingly, we readily conclude that the evidence of methamphetamine obtained during the patdown is the unattenuated product of exploitation of the unlawful stop and must therefore be suppressed.
We turn to the evidence that the state obtained as a result of the officer's questioning of defendant about the backpack, which occurred after defendant had been handcuffed and arrested and advised of his Miranda rights. The state argues that the provision of Miranda warnings constitutes an intervening circumstance sufficient to purge the taint of the previous illegal police conduct. In the state's view, Hall strongly suggests that being given Miranda warnings operates as a "universal solvent"[6] to break the causal chain.
We disagree for the following interrelated reasons. First, although the provision of Miranda warnings is a consideration in the attenuation analysis, Hall, 339 Or. at 35, 115 P.3d 908, as the court in Hall made clear, whether the state has carried its burden of establishing that the evidence is not derived from the preceding illegality requires a fact-specific inquiry into the totality of the circumstances. Id. Further, after this case was briefed and argued, we decided La France, in which we held that the giving of Miranda warnings was not a sufficient intervening circumstance in that case to purge the taint of unlawful police conduct. 219 Or.App. at 557, 184 P.3d 1169. In La France, which involved a defendant's consent to a search after he was illegally seized, we noted that a reasonable person would not understand the Miranda warnings to mean that a person was not required to consent to a request to be searched, but, rather, the warnings "could perpetuate the person's perception that his or her liberty continued to be restrained as the officer pursued a criminal investigation by seeking consent to a search." Id. Thus, the key was that defendant reasonably believed that his liberty was restricted when the officer requested consent to search, and that circumstance affected his decision to consent to the search. See State v. Holmes, 311 Or. 400, 409-10, 813 P.2d 28 (1991).
In the state's view, it is significant that, in this case, defendant did not consent to a search, but instead made incriminating statements-after having been specifically told, as part of the Miranda warnings, that "he did not have to make any statements." We agree with the state that this case thus presents a closer question than in La France. Nevertheless, under a close reading of Hall, including its reliance on State v. Olson, 287 Or. 157, 598 P.2d 670 (1979), and considering the totality of the circumstances, we conclude that suppression is required.
In Hall, the Supreme Court held that Article I, section 9, requires consideration of the effect of unlawful police conduct upon a defendant's decision to consent, even if the unlawful conduct did not rise to the level of overcoming a defendant's free will. 339 Or. at 32, 115 P.3d 908. In arriving at that conclusion, the Supreme Court discussed several earlier cases as illustrative of the principle, among them Olson, which, although based on Fourth Amendment precedents, was, in the court's view, "on point." Id. In Olson, the officers made an illegal entry into the defendant's residence and, after giving him Miranda warnings, arrested him; thereafter, the defendant made incriminating statements to the officers. The court concluded that the giving of the Miranda warnings was "inadequate to relieve the obvious taint resulting from breaking in, arresting defendant, and searching the premises" and, thus, the evidence was subject to suppression under Article I, section 9. Olson, 287 Or. at 166, 598 P.2d 670; accord State v. Vondehn, 219 Or.App. 492, 509-10, 184 P.3d 567 (2008) (giving of Miranda warnings insufficient to break causal relationship between earlier Miranda violation under Article I, section 12, of the Oregon Constitution *384 and the defendant's post-Miranda statements).
Relying in part on Olson, the Supreme Court in Hall then distinguished its earlier decisions in State v. Kennedy, 290 Or. 493, 624 P.2d 99 (1981), and State v. Rodriguez, 317 Or. 27, 854 P.2d 399 (1993)cases in which it had concluded that suppression was not required following illegal police conductby stating:
"As the above-described cases [including Olson] illustrate, this court's conclusions in Kennedy and Rodriguez that suppression was not required to vindicate those defendants' rights must be understood in light of the specific facts of each of those casesparticularly, the facts that those defendants both had volunteered to allow a search without any police prompting and, in Rodriguez, that the police had provided the defendant with Miranda warnings before questioning him about drugs or weapons. In the absence of such intervening circumstancesor other circumstances mitigating the effect of the unlawful police conductthis court has required suppression under facts similar to those at issue in Kennedy and Rodriguez."
Hall, 339 Or. at 34, 115 P.3d 908. From this discussion in Hall, we conclude the following: As in Olson, the mere proximate provision of Miranda warnings following an unlawful seizure or entry does not per se attenuate the taint of the prior illegal police conduct. Rather, the asserted "attenuating" effect of Miranda warnings must be assessed in the totality of the circumstances, including whether the defendant subsequently, and without police prompting, unilaterally volunteered information or consented to search.
The facts at issue here are similar to Olson. At the time that defendant made the incriminating statements that led to the discovery of the evidence in the backpack, he was handcuffed and under arrest as a direct result of previous illegal police conduct. The inculpatory evidence used to arrest himthat is, the drugs found on his personwas itself the fruit of the previous exploitation of the original illegality. The officer then sought defendant's response to questioning as the result of knowledge of the inculpatory drug evidence obtained from the preceding unlawful police conduct. Moreover, defendant did not spontaneously offer the incriminating statements about drugs in his backpack; rather, those statements were prompted by the officer's questions. Each phase of the encounter flowed in sequence.
Under those circumstances, the fact that defendant had been given Miranda warnings is insufficient to demonstrate a break in the causal relationship between defendant's statements and the earlier violations. That is, the giving of Miranda warnings failed to mitigate the significant effects of the unlawful police conduct on defendant's decision to respond to the officer's questions. Thus, the state has failed to meet its burden of establishing that defendant's decision to respond to the officer's questions, "even if voluntary, was not the product of the preceding violation of defendant's rights under Article I, section 9." Hall, 339 Or. at 36, 115 P.3d 908. The trial court erred in denying the motion to suppress the evidence obtained during the illegal stop of defendant.
Reversed and remanded.
NOTES
[1]  The trial court issued a single ruling denying defendant's motion to suppress. Thus, defendant's characterization of his challenge as raising two separate assignments of errorone with respect to evidence found during the patdown and the other referring to evidence found in his backpackis technically inaccurate. See ORAP 5.45(3) (assignments of error are to be directed against rulings by the trial court). Defendant's noncompliance with that rule has not impeded our review of the pertinent ruling.
[2]  We review the lawfulness of searches and seizures for errors of law, although we are bound by the trial court's findings of historical fact to the extent that those findings are supported by evidence in the record. State v. Ehly, 317 Or. 66, 75, 854 P.2d 421 (1993).
[3]  The trial court found that the trooper patted down the driver before putting defendant's identification in the patrol car; however, Hunt's uncontroverted testimony indicated that he first placed defendant's identification and the driver's license in his patrol car. Ultimately, this discrepancy is of no consequence to our analysis.
[4]  It is unclear from the record when defendant's identification was returned to him. In that regard, the record establishes only that it was in defendant's personal property when he was booked into jail.
[5]  Article I, section 9, provides, in part, "No law shall violate the right of the people to be secure in their persons, houses, papers, and effects, against unreasonable search, or seizure[.]"

Defendant makes a similar challenge under the Fourth Amendment to the United States Constitution. Because we resolve the issue on state law grounds, we need not reach defendant's federal constitutional argument. See State v. Kennedy, 295 Or. 260, 262, 666 P.2d 1316 (1983) (court considers all questions of state law before reaching federal constitutional claims).
[6]  That particular characterization is ours, as posited at oral argument, which the state did not dispute.
