NBA forward Matt Barnes was arrested tonight for an outstanding traffic warrant, and for allegedly mouthing off — BIGTIME — to the arresting officer, TMZ has learned.

According to law enforcement sources, Barnes was busted by police in Manhattan Beach, CA for a misdemeanor traffic warrant, and we’re told he also resisted the arresting officer.

Barnes is currently being booked by Manhattan Beach PD for the traffic violation, and for resisting an executive officer … a felony.

– Reported by TMZ.com