City of Wenatchee v. Stearns
Washington Supreme Court upheld the legality, under the state’s private affairs clause and the Fourth Amendment, of a police stop that was based on information received in a 911 call. A stop based on a 911 tip is lawful when circumstances indicate the tip is reliable and it contains a factual basis to give the officer reasonable suspicion of a crime, even if how the caller gathered the facts conveyed in the tip is not established.