Patrons on board the Pittsburg bound train reported that a male suspect was creating a disturbance. The suspect was detained by responding officers. Record checks showed that the man had an outstanding $8,000 arrest warrant for vandalism, held by San Francisco PD. The man was arrested for his warrant. A search incident to arrest revealed a small quantity of suspected heroin on his person. The man was booked at Glenn Dyer Jail for his warrant and for possession of narcotics.