A New York City police officer and a suspect he was trying to arrest were both shot and killed during a physical struggle in the Bronx early Sunday, Sept. 29.

The NYPD identified the slain officer as 33-year-old Brian Mulkeen.

The officer was shot three times, possibly with his own gun, as he grappled on the ground with an armed suspect.

“We lost a hero this evening,” Mayor Bill de Blasio said at a news conference outside the Jacobi Medical Center.

Mulkeen was patrolling the streets around a city apartment complex at about 12:30 a.m. as part of a unit investigating potential gang activity, according to NYPD Chief of Department Terence Monahan.

Mulkeen and other officers tried to apprehend a man who had fled questioning, and a struggle on the ground ensued, Monahan said.

As the men wrestled, Mulkeen’s body camera recorded the officer shouting, “He’s reaching for it! He’s reaching for it!”

“Officer Mulkeen’s gun fired five times,” said Monahan. “At this point, it is not clear who fired Officer Mulkeen’s gun.”

Officials said five officers fired at the 27-year-old suspect, who was pronounced dead at the scene and he has not been publicly identified yet.

A .32-caliber revolver that police said belonged to the suspect was recovered. Monahan said it had not been fired.

The suspect was on probation until 2022 for a narcotics-related arrest last year and had several prior arrests, including a burglary conviction in Rockland County, Monahan said.

Mulkeen had served nearly seven years with the NYPD and worked out of the 47th precinct.

Monahan called the officer “brave,” and added that he was “doing the job we asked him to do, a job that New Yorkers needed him to do.”

Mulkeen is the second NYPD police officer killed in the line of duty this year, following Detective Brian Simonsen, who was accidentally shot by fellow officers while confronting a robbery suspect in February.

“We’ve been here too often. We know the directions to get here,” said Pat Lynch, the president of New York City’s Police Benevolent Association. “It has to stop.”