Unknown Gunman fired a smoke canister at a New York subway station leaving 16 people injured during morning rush hours.
Shots were fired at the 36th Street station in Sunset Park at 08:30 local time (12:30 GMT), police said.
Images from the scene showed bloodied passengers lying on the floor of the smoke-filled station.
The attacker fled the station, and witnesses quoted in US media described a man wearing an orange construction vest and gas mask.
The suspect threw a smoke bomb to distract the crowd, police sources told NBC News
Others are being treated for smoke inhalation and injuries sustained in the initial panic.
The New York police commissioner, Keechant Sewell, said no one was considered to have life-threatening injuries and that the shooting was not being investigated as terrorism.
