The station agent reported that a male suspect spat on him in the Sansome Street hallway. The suspect was described as a white male with a beard, wearing a blue and white shirt. Responding officers were unable to locate the suspect in the area. On 9/29/14, at about 0037 hours, an agent reported that the suspect might be sleeping in one of the station exits. Officers responded and detained a male who matched the suspect description. The victim positively identified the suspect and placed him under citizen's arrest for battery. The suspect was cited for battery on a transit worker and issued a prohibition order. The agent was not injured as a result of this incident.