At Least 29 Injured in Brooklyn Subway Shooting, Undetonated Devices Found

A maniac possibly disguised as an MTA worker unleashed bloody hell on a Brooklyn subway train during the early-morning rush Tuesday, injuring at least 29 people — including 10 who were shot — when he set off a smoke grenade and opened fire in the car, authorities said.

A jammed Glock and two extended ammo magazines were later recovered at the scene — suggesting the gunman could have unleashed more mayhem if his weapon hadn’t malfunctioned, law enforcement sources told The Post.

The shooter — who has been on the run for hours — was wearing a “green construction-type vest” and gas mask when he launched his bloody assault aboard a Manhattan-bound N train around 8:24 a.m. just as the subway was pulling into the 36th Street station in Sunset Park, NYPD Commissioner Keechant Sewell said during a news briefing at the scene.

“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,” Sewell said. “The train at that time began to fill with smoke. He then opened fire, striking multiple people on the subway and on the platform.”

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Police have only released a bare-bones description of the mass shooter and said he is a roughly 5-foot-5 black man with a heavy build at around 170 pounds.

Cops also are hunting for a U-Haul van with Arizona plates — after detectives found a credit card at the scene that they believe belongs to the gunman, and one of the charges racked up on it is for a rental out of Philadelphia, law-enforcement sources said.

Sewell said the shooting isn’t being investigated as an act of terrorism at the moment and noted none of the victims were of a particular ethnic group, but she also added that no motive has been ruled out.

The suspect shot 10 people, including five who are in critical but stable condition, the FDNY said.

Some of the victims suffered smoke inhalation, but none of the injured have life-threatening injuries, Sewell said. A pregnant woman was among those hospitalized, sources said, while a slew of injured victims walked into hospitals themselves for treatment, officials said.

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Cops also found a slew of other weapons, including a hatchet, a can of pepper spray, two gas canisters, a bag full of fireworks and another satchel holding what appears to be BB pellets at the scene, sources said. It’s not immediately clear if all of the items belonged to the shooter.

An image of one of the bags and obtained by The Post showed a number of smoke bombs, fireworks and some type of green wire.

The FDNY said earlier Tuesday that several undetonated devices were found at the 36th Street station. The NYPD later said, “There are no active explosive devices at this time.”

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A straphanger who was on the train when the violence broke out told The Post there were so many rounds fired off, she “lost count.”

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The NYPD’s bomb squad responded to the scene and authorities are scouring MTA surveillance to try to identify the suspect, but sources told The Post cameras on the station’s platform and turnstiles hadn’t been working since Friday.

While the suspect was already on the train after having entered at another location, the surveillance footage could have caught him leaving after the attack.

Mayor Adams acknowledged there’d been a “malfunction” with the station’s cameras during a remote media appearance.

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