Four people were wounded at a subway station in New York City’s Brooklyn borough (county) on Sunday when police officers shot a man threatening them with a knife, and inadvertently sprayed bullets that hit passengers, authorities said. The people struck by gunfire included two innocent bystanders, one of the officers and the man with the blade, who the police initially confronted because he hadn’t paid his fare, officials said. One of the passengers, a 49-year-old man, was hospitalized in critical condition after a bullet passed into an adjoining subway car and struck his head. A video posted by a passenger showed upset passengers fleeing, police running to help the injured and the wounded officer suddenly realizing he had also been struck by a bullet. Interim Police Commissioner Thomas Donlan, who was only appointed to his position Friday, promised a thorough investigation, but cast blame for the incident on the man accused of brandishing the knife. So did Metropolitan Transit Authority CEO Janno Lieber.   “We bless the officers and the Mayor and the police and the NYPD who puts people out there to make sure that people who get on the transit system do not have to encounter people with weapons. In this case, that’s what those officers were doing. They were trying to prevent somebody who had a weapon from getting on a train. And terrible things occurred,” Lieber said.   The shooting happened when two officers followed a man up the station steps to an elevated platform after seeing him enter without paying, Chief of Department Jeffrey Maddrey said. They followed him onto a train that had pulled into the station and fired two Tasers, but neither incapacitated the man, Maddrey said. Maddrey said the man was advancing on the officers with the knife when both officers fired multiple rounds. The 37-year-old man was hit several times. He was hospitalized in stable condition. The video taken by a passenger shows the officers rendering first aid, before one of them realized that he, too, had been hit by a bullet. Besides the passenger struck in the head, a 26-year-old woman suffered a graze wound. The wounded police officer had a bullet enter his torso under his armpit and lodge in his back but was expected to make a full recovery. Mayor Eric Adams, a Democrat, visited the wounded officer in the hospital Sunday.