State v. Barker

In 1996, an Oregon state officer pursued the defendant into Washington and detained him until a Washington state trooper arrived and arrested the defendant for driving while under the influence of intoxicants. The trial court held that the Oregon officer lacked authority to arrest the defendant, and suppressed all evidence flowing from the arrest, effectively ending the case. On discretionary review sought by the State, the Court of Appeals agreed that the arrest violated RCW 10.93.090, part of the Washington Mutual Aid Peace Officer Powers Act of 1985, because the officer lacked training…