An off-duty BPD sergeant driving by the Castro Valley parking lot observed two suspicious subjects. He flagged down the on-duty sergeant and they contacted the two, now located by a burglarized vehicle. A search of the lot revealed another burglarized vehicle nearby. The suspects had also traveled to Dublin station, and a check of the lots there revealed three more burglarized vehicles. Both suspects were arrested and booked for burglary, possession of stolen property and outstanding felony and misdemeanor warrants.