When a crime is committed in a police officer's presence an officer may arrest a suspect on the spot without an arrest warrant. The Grand Jury also decided to determine if.Crime Lab analysis of critical DNA evidence could be completed before the arrest of a suspect(s) takes place. If they cannot afford an attorney, the judge can appoint one for them. Cannot be located, all reasonable means have been exhausted and probable cause to arrest exists, submit the case to the District Attorney's. The warrant reaches throughout the state and if you happen upon a police officer you could be arrested. So that's where we'll start. Code § 836, authorizes peace officers to arrest a person with or without a warrant. Federal lawsuit alleges Santa Clara County's 'domestic violence protocol' is unconstitutional, allows arrest without probable cause. Arrested in Santa Clara County?