The station agent called to report a male and a female in a verbal dispute. The agent also reported that the male grabbed the female by the arm, picked up a bag full BART tickets (which the agent had stored nearby) and threw it at the female's head, striking her. Officers arrived and made contact with both parties. The female refused to cooperate with officers, but did tell them that the suspect was her boyfriend. The female was not injured and demanded to leave the scene without assisting officers in their investigation. The station agent gave a detailed statement and placed the suspect under citizen's arrest for the domestic battery. The suspect was then booked into the San Francisco County Jail for the domestic battery charge. Station video has been requested.