California Code, Penal Code - PEN § 836.3

A peace officer may make an arrest in obedience to a warrant delivered to him, or may, without a warrant, arrest a person who, while charged with or convicted of a misdemeanor, has escaped from any county or city jail, prison, industrial farm or industrial road camp or from the custody of the officer or person in charge of him while engaged on any county road or other county work or going to or returning from such county road or other county work or from the custody of any officer or person in whose lawful custody he is when such escape is not by force or violence.