NYPD launches search for suspect in Brooklyn-subway mass shooting that left over a dozen injured

• The NYPD on Tuesday launched a search after a gunman opened fire on a New York City subway train.
• Sixteen were injured in the rush-hour mass shooting at the 36th Street subway station in Brooklyn.

The New York City Police Department on Tuesday launched a search after it said a gunman in a gas mask opened fire on a New York City subway train during morning rush hour. Sixteen people were injured, including 10 who were shot.

"We are using every available officer to look for the suspect," an NYPD source told Insider, adding: "The NYPD won't stop until he is in custody."

The shooting unfolded just before 8:30 a.m. Tuesday as a Manhattan-bound N train pulled into the 36th Street subway station in the Sunset Park neighborhood of Brooklyn, authorities said.

"An individual on that train donned what appeared to be a gas mask. He then took a canister out of his bag and opened it. The train at that time began to fill with smoke. He then opened fire, striking multiple people on the subway and in the platform," Commissioner Keechant Sewell of the NYPD said at a press briefing.

A New York City Fire Department official at the briefing said five of the gunshot victims were in critical but stable condition.

The gunman fled the scene after the chaotic shooting.

Sewell described the shooter as an about 5-foot-5-inch Black man with a "heavy build."

He was wearing a green "construction-type vest" and a gray hooded sweatshirt, Sewell added.

"Anyone with information, videos, or photographs, no matter how insignificant they think they may be, is encouraged" to call the NYPD's Crime Stoppers hotline at 1-800-577-TIPS, Sewell said.

Gov. Kathy Hochul of New York, who also spoke at the briefing, said: "This individual is still on the loose. This person is dangerous." She asked New Yorkers to be "vigilant" and "alert."