Seventeen people have been injured in a shooting during the morning rush hour at a New York City subway station. 

The unidentified attacker detonated a smoke bomb and opened fire at Brooklyn's 36th Street station at 08:30 local time (12:30 GMT). 

Images from the scene showed bloodied passengers lying on the floor of the smoke-filled station. 

Officials are appealing for information about the gunman, who fled the scene and is still at large. 

"An individual donned a gas mask, he then opened fire striking multiple people on the subway and on the platform." New York City Police Commissioner Keechant Sewell said 

The attacker then fled wearing what Ms. Sewell said was a green construction-type vest and a grey sweatshirt. 

"This is not being investigated as an act of terrorism at this time," she added. 

Police have since tracked down a rental van they had been searching for in connection with the attack 

according to the Associated Press, but the suspect wasn't there. 

Ten of those who are being treated for injuries were shot 

while others suffered smoke inhalation as well as injuries sustained during the initial panic. 

Five people are in critical but stable condition. None of the injured are believed to be in a life-threatening condition, police said. 

Officers are still working to establish a motive for the attack. 

New York's fire department told the BBC it originally received a call about smoke inside the station. 

US cities have seen a troubling rise in gun violence incidents over the past two years.