NYPD Cop Kills Self Outside Pct.

An NYPD sergeant shot himself to death Thursday night inside a car parked in front of the 66th Precinct stationhouse in Borough Park, Brooklyn, police sources said.

The sergeant, who was assigned to the precinct and set to become a detective, stunned colleagues when he pulled the trigger at about 7:30 p.m., sources said. He fired at least one round into his head.

Police did not immediately release the cop’s name or provide an account of what transpired.

Late Thursday, the tragic scene at the stationhouse was punctuated by a gray SUV racing up and the driver screaming “That’s my boy! That’s my boy, let me through!”

An officer lifted the tape roping off the scene and let the man in with no questions asked.

Meanwhile, word of the high-visibility suicide of a brother in blue spread quickly through the ranks.

“We’re all a little bit shell-shocked and saddened,” said a high-ranking police source.

Another source said there was no indication that the sergeant was suicidal.

“People always say, ‘The signs, the signs,’ but there were no signs,” said the source.

The sergeant was about to receive his detective shield, sources said. He was transferred to the 66th Precinct from the 78th Precinct in Park Slope within the last few days, they added.

The 66th Precinct stationhouse is located on 16th Ave. near 59th St.

A source at the scene said the vehicle the sergeant used in his suicide was parked on the opposite side of 16th Ave. from the police station.

Afterward, the car was surrounded by official vehicles and cops set up roadblocks on either side of 16th Ave.

Efriam Baruch, 15, was on 59th St. near 16th Ave. when he said he heard two gunshots.

“I was down the block and heard two funny noises, like firecrackers exploding,” said the teenager. “I ran over to see what happened and I see all of this action, cops running out of the precinct to a car. It looked like someone was in the car.”

The teen added that he saw the dead sergeant hunched over near the passenger side of the car.

“It looked to me like (the officer) was laying down in the front of the car by the dashboard,” he said. “It’s a sad situation.”