Investigators are piecing together what happened after a Tuesday morning shooting on a Brooklyn subway in which at least 23 people were injured. The gunman is still at large.
This is what we know so far.
Shortly before 8:30 a.m., a man wearing a vest and construction helmet put on a gas mask as a crowded N train approached the 36th Street station in the Sunset Park neighborhood of Brooklyn and threw two grenades of smoke to the floor of the car. and fired 33 shots before fleeing.
Authorities said consumer fireworks, gasoline and two unused smoke grenades were recovered from the scene.
How many people were injured?
Ten people were hit by gunfire, police said. Five of the victims were seriously injured, but none of their injuries were life-threatening, authorities said. Another 13 people suffered injuries related to smoke inhalation, falls or panic attacks, authorities said.
Are there any clues to find the gunman?
Authorities have named a “person of interest” in connection with the shooting: Frank R. James, 62, with addresses in Philadelphia and Wisconsin. He was not named as a suspect. Police identify someone as a person of interest when they believe the individual may have information related to a crime.
The investigation was hampered by the station’s security cameras being turned off, but other signs led investigators to Mr. James. Two law enforcement officials said a credit card with Mr. James’ name on it had been found at the scene of the shooting, as was a key to a U-Haul van that Mr. James had rented.
James rented the truck in Philadelphia sometime in the last few days, police said. The abandoned van was found by police Tuesday afternoon about five blocks from the Kings Highway station, where police say the gunman boarded the train.
A fireworks vendor in Racine, Wisconsin, said last June a man named Frank James bought several brands of consumer fireworks similar to those left behind.
Mr. James had not contacted the police as of Wednesday morning.
What do we know about the person of interest?
Neighbors described Mr. James as quiet and gruff. He seemed to have posted dozens of videos on YouTube where he referred to news events in lengthy vitriolic rants. He blamed black women for violence among blacks and pointed to the Russian invasion of Ukraine as evidence that whites are genocidal.
In a video posted on YouTube on March 1, the person featured in the video criticized New York Mayor Eric Adams for recently announced policies addressing public safety on subways.
Has security been increased?
Mr. Adams said on Wednesday morning that there would be “an additional complement of police officers” on the subway.
Mr. Adams’ security detail will also be increased, authorities said.
Officials in many cities, including Boston, Philadelphia, Washington, Toronto and Vancouver, said there were no credible threats to their public transportation systems but they would increase security.