CCTV released of Queens NY subway attack suspect

US police have released CCTV footage of a woman who is alleged to have pushed a passenger in front of an oncoming train in New York.

Eyewitnesses said the man was standing on a platform at the 40th Street-Lowery Street subway station in Queens when a woman rose from a bench and shoved him onto the tracks.

It is the second such incident in New York in recent weeks. A homeless man has been charged with murder for pushing a passenger to his death in the Times Square subway.

New York's Mayor Bloomberg told reporters that "two [cases] is two too many."