A patron reported via email and phone that she was the victim of a sexual battery on 2/9/17, about 1720 hours. A male suspect grabbed the victim's buttocks while she was on the platform. The victim shouted at the suspect, who then attempted to grab her crotch. The victim punched the suspect in the nose, making it bleed. The victim boarded an arriving Daly City bound train and left the station. The suspect was last seen on the platform. The suspect was described as a black male in his 20's, 5'3" tall, wearing a gray hooded sweatshirt with the hood up, and carrying a backpack. The victim was not injured.