"Reasonable grounds," when used in the context of a law enforcement officer's decision to make an arrest, means probable cause.
RCW 46.04.455
Reasonable grounds.
Applied in 2 court decisions — leading case State v. Baldwin (2001)
Most recently applied in State v. Baldwin (December 2001)
1995 c 332 s 19.
Official source: Washington State Legislature. Reproduced from public-domain Washington statutes; confirm against the official source for the current text. Not legal advice.