2017 CO 8
Colo.2017Background
- Trooper Ynostroza stopped John Cox for driving in the left lane and, during the stop, noticed Cox was unusually nervous, had beads of sweat, stuttered, and continuously licked his lips.
- Cox produced a rental agreement showing the car was rented in Sunnydale, CA eleven days earlier; he told the trooper he had driven “straight through” to Nebraska, leaving days unaccounted for.
- Two cell phones were visible on the passenger seat; Cox refused to open the trunk but acknowledged the trunk’s contents were his.
- The trooper deployed his drug-detection dog, Lobo, which alerted on the trunk; Lobo is trained to detect marijuana, methamphetamine, heroin, and cocaine and signals the same for any substance or quantity.
- Trooper opened the trunk after the alert and found sealed packages of marijuana; trial court suppressed the evidence, reasoning the dog’s alert was unreliable post-Amendment 64 because it detects lawful small amounts of marijuana and remaining factors did not establish probable cause.
- The People appealed interlocutorily; the Colorado Supreme Court reversed, holding probable cause existed under the totality of the circumstances (canine alert, unusual nervousness, inconsistent travel explanation, and two cell phones).
Issues
| Issue | Plaintiff's Argument (People) | Defendant's Argument (Cox) | Held |
|---|---|---|---|
| Whether trooper had probable cause to search the trunk | Canine alert plus nervousness, inconsistent travel story, and two phones create a fair probability of contraband | Dog alert unreliable post-Amendment 64; remaining facts individually innocent and insufficient for probable cause | Yes — probable cause existed under the totality of circumstances; suppression reversed |
| Whether a canine alert to marijuana can be considered after Amendment 64 | Alert remains relevant because many marijuana-related activities remain illegal; odor/alert contributes to probable cause | Alert could indicate only lawful possession and thus should be disregarded | Alert is admissible as one factor; cannot be wholly disregarded |
| Whether innocent explanations for observed facts require officer follow-up | No affirmative duty to elicit clarifying answers; innocent explanations reduce weight but do not eliminate probative value | Trial court faulted officer for not asking follow-up; innocent explanations negate suspiciousness | No requirement to ask clarifying questions; facts may be considered in combination despite possible innocent explanations |
| Standard for evaluating probable cause (totality of circumstances) | Probable cause is a commonsense, nontechnical fair-probability test considering all facts in combination | Argues court should not conflate reasonable suspicion with higher probable cause standard | Court reaffirms totality test; finds combination of factors meets probable cause threshold |
Key Cases Cited
- People v. Zuniga, 372 P.3d 1052 (Colo. 2016) (odor/alert for marijuana remains relevant after Amendment 64 and may contribute to probable cause)
- Florida v. Harris, 568 U.S. 237 (2013) (canine alert can support probable cause under a reliability-focused analysis)
- Maryland v. Pringle, 540 U.S. 366 (2003) (probable cause is assessed under the totality of circumstances and may consider facts in combination)
- People v. Swietlicki, 361 P.3d 411 (Colo. 2015) (probable cause is a nontechnical, commonsense standard requiring a fair probability)
- United States v. Wood, 106 F.3d 942 (10th Cir. 1997) (illustrative caution that ambiguous, innocuous facts and nervousness alone may not support reasonable suspicion or probable cause)