State v. Andersen, 429 P.3d 850

Around midnight officers responded to an apartment after Andersen called 911 reporting an unconscious male (Ryan Stebbins) in the bathroom and officers observed a used syringe.
Officer Niska asked Andersen to talk; she sat in an armchair in an open area, was not handcuffed or told she was under arrest, and was never given Miranda warnings.
Sergeant Schneider joined briefly and pursued aggressive questioning; officers twice told Andersen to remain seated when she made movements to stand.
Andersen eventually told officers she had flushed a syringe after Stebbins passed out; she then consented to a purse search that produced two baggies of heroin and two syringe caps were found on her person.
Andersen was charged with possession of heroin and destruction of evidence; she moved to suppress her statements and later the district court suppressed her statements (finding custodial interrogation and involuntariness) but denied suppression of physical evidence from the purse search.
The State appealed; the Idaho Supreme Court reviewed the transcript and video de novo and reversed suppression of Andersen’s statements.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether Andersen was in custody triggering Miranda	State: interrogation was custodial because officers twice told Andersen to stay seated and questioning was coercive	Andersen: she was not free to leave; being told to stay turned the contact into custody	Court: Not custody — detention only; restraint was not of the degree associated with formal arrest
Whether statements were involuntary	State: statements voluntary under totality of circumstances	Andersen: statements were coerced/overborne by forceful questioning and lack of warnings	Court: Statements voluntary; defendant’s will not overborne (she shouted back, normal intelligence, short duration)
Whether physical evidence from purse was tainted by Miranda violation	State: evidence admissible because consent was voluntary and not fruit of Miranda error	Andersen: physical evidence is fruit of unlawfully obtained statements	Court: District court had admitted purse evidence; suppression of statements reversed (appeal focused on statements)
Standard of review given evidence available	State: De novo review appropriate because appellate record included same transcript and video	Andersen: defer to district court fact findings	Court: Freed review and weighed evidence itself because same record available

Miranda v. Arizona, 384 U.S. 436 (Supreme Court of the United States) (establishing Miranda warning requirements)
Howes v. Fields, 565 U.S. 499 (Supreme Court of the United States) (test for whether a reasonable person would feel at liberty to terminate interrogation)
Oregon v. Mathiason, 429 U.S. 492 (Supreme Court of the United States) (Miranda not required for every police interview)
Thompson v. Keohane, 516 U.S. 99 (Supreme Court of the United States) (custody inquiry objective under Miranda)
Missouri v. Seibert, 542 U.S. 600 (Supreme Court of the United States) (significance of Miranda warnings for voluntariness analysis)
Schneckloth v. Bustamonte, 412 U.S. 218 (Supreme Court of the United States) (voluntariness of consent evaluated under totality of circumstances)
State v. James, 148 Idaho 574 (Idaho Supreme Court) (factors for custody analysis under Miranda)
State v. Yager, 139 Idaho 680 (Idaho Supreme Court) (totality-of-circumstances voluntariness test)