A gunman killed two New York police officers as they sat in their squad car on Saturday and then turned his weapon on himself, the New York Times reported.
The officers were patrolling in the Bedford-Stuyvesant section of Brooklyn. NYPD Deputy Chief Kim Royster said it appeared the shots struck them in the upper body, the newspaper said.
The gunman opened fire on the officers from the patrol car's passenger side and fled into a nearby subway station. The man then died from a self-inflicted gunshot wound to the head, the Times quoted Royster as saying.
A police spokesman could not confirm the newspaper account, but he said the officers had been taken to Brooklyn's Woodhull Medical Center and said their conditions were unknown.
The spokesman identified the shooter as a 28-year-old man and said he had been taken to Brooklyn Hospital Center. A weapon has been recovered, he said.
New York police have come under pressure in recent weeks, with protests erupting after a grand jury declined to charge an officer involved in the chokehold death of an unarmed black man.
But there was no immediate motive or indication the case played a role in the shootings.
Mike Isaac, a neighborhood resident, told CNN the area was largely black and had been tense since the protests. "The mood is pretty freaked out," he said.
Television footage showed the area around the shooting taped off by police. The subway line where the self-inflicted shooting took place was shut down.
The Times said the last fatal shooting of a New York City police officer was in 2011.