The Newark police officer accused of killing his estranged wife was in full uniform when he shot her dead in the middle of their quiet street, according to a neighbor’s 911 call released Monday.

Lt. John Formisano, 49, allegedly wounded his wife and her boyfriend in her Jefferson, New Jersey, home on July 14 — and then followed the fleeing woman to a neighbor’s front porch to finish her off.

“There’s someone shot on my front steps,” the neighbor told a dispatcher in a recording obtained by NJ Advance Media. “I think she’s dying or dead … You better hurry up…”

“The guy’s a Newark cop,” the caller continued. “My wife saw him in his car in his police uniform and he shot his ex-wife.”

Another neighbor also called 911 to report the slaying.

“A man just shot his wife in front of my house,” a woman can be heard saying, her voice shaking.

“You gotta hurry up because she’s dying in front of my house, please!” the woman continued.

She identified the shooter as Newark cop who lived a few houses down.

“He shot her. I saw him. I saw him through my window,” she said.

The dispatcher can be heard trying to calm the woman down, and she responds: “She’s dying in front of my house!”

Prosecutors say Formisano launched his attack at about 11:20 p.m., when he shot and wounded his wife, Christine Solaro Formisano, in her house, where their two children were.

He also allegedly shot and wounded Christine’s boyfriend, identified only as a 40-year-old with the initials T.S.

After tracking his wife down and killing her, he fled, and wasn’t arrested until 2 a.m. the next morning in Livingston, authorities said.

The 24-year veteran of the Newark police force was charged with murder, attempted murder and endangering the welfare of their two children, who were not harmed physically.

So far, he hasn’t been seen in court because he remains hospitalized in the psychiatric unit at St. Claire’s Behavioral Health in Boonton.

Formisano told authorities that he remembered dropping by his former house and suspecting that Christine had a man in her bedroom — he then said he “blacked out,” according to a probably cause affidavit.

The cop, who is now suspended from the force without pay, had moved out of the house he bought a decade ago and filed for divorce from his wife, though the proceedings were ongoing.

Morris County prosecutors released the 911-call recordings in response to a records request from the outlet.