BREAKING: At Least 16 Shot In NYC Subway Station, Shooter Wore A Gas Mask, Threw Smoke Bombs

SUNSET PARK, Brooklyn (WABC) -- At least 16 people were shot or otherwise injured after a lone gunman in a reflective vest and a gas mask threw smoke bombs on a subway car in Brooklyn and began shooting Tuesday morning.

A manhunt is now underway as details continue to emerge in this developing situation.

Police say the shooting happened on a Manhattan bound N train making express stops just before 8:30 a.m., and that the suspect was seen mumbling to himself before donning the gas mask and removing a canister from a bag before the car began to fill with smoke.

He then opened fire with a handgun, striking several people on the train and on the platform at the 36th Street subway station in Sunset Park.

The train then continued to the 25th Street station in Greenwood Heights.

"This perpetrator dropped those smoke cans, if that's what they are, and shot around, and then exited from that point," retired NYC Chief of Detectives Robert Boyce said. "He's not going to stay on there if there's smoke on there, even if he has the filter mask."

Shell casings were recovered on the train and on the platform, and officials confirmed there were no working cameras in the 36th Street station.