the man first asked the woman for a lighter and then suddenly attacked after she gave him one.
During the attack, the woman dropped her cell phone. He can be seen on the video picking it up before leaving the scene.The suspect was identified by police as William Clark, 36, who now faces several charges. He had previously been arrested for burglary, retail theft, robbery and stolen auto, according to WTXF.
via CAUGHT ON TAPE: Man Brutally Drags Woman Onto Subway Tracks in Philadelphia | Fox News Insider.