Machete-wielding man killed by cops outside New Jersey home slaughtered his own mother and grandparents

The machete-wielding maniac who was killed by cops in a frantic confrontation outside a New Jersey home Monday night slaughtered his own mother and grandparents before police arrived, officials revealed Tuesday.

The unidentified suspect was shot dead when police responded to the Piscataway home on River Road around 5:30 p.m. after receiving a 911 call about an individual armed with a knife, according to the New Jersey Attorney General’s Office.

Police 𝓉𝒶𝓅𝑒 blocks a light blue house in Piscataway, New Jersey, where three people were found dead.3

The machete-wielding maniac allegedly slaughtered his own mother and grandparents before being gunned down by New Jersey police on Monday.Luiz C. Ribeiro for New York Post

Piscataway Mayor Brian Whaler said the assailant’s father called 911.

“You have to understand there is a husband that is about to bury a wife, parents and a son,” Whaler said, WABC reported.

“So out of respect to the household, for the rest of the family members, but they were all related. I just want to let the general public know this is not someone coming in, knocking on the door, this is all folks that all knew each other and were related to each other blood-wise.”

When police arrived at the home, the unidentified lunatic charged at them with a large blade, but they were unable to stop him with tasers.

Piscataway police detectives work a crime scene near River Road, with yellow police 𝓉𝒶𝓅𝑒 visible.3

Police responded to the Piscataway home on River Road around 5:30 p.m. after receiving a 911 call about an individual armed with a knife.Kyle Mazza/UNF News/Shutterstock

The violent perp continued to move toward the officers with his machete and was eventually shot and killed by police.

“I was pretty much about to start making dinner, and then I just heard the cops come next door,” startled neighbor Jessica Conroy told ABC 7 Eyewitness News of the deadly commotion.

“I looked outside the window, and they had their weapons drawn, and then we heard the shots go off.”

Cops then discovered the suspect’s three dead loved ones inside the home, authorities said.

Neighbors described the family as friendly and said they had only positive encounters with them.

Crime scene at night with police and emergency vehicles, a blue dumpster, and a yellow crime scene 𝓉𝒶𝓅𝑒 across the foreground.3

The cause of deaths of the three victims are still being determined by officials.Kyle Mazza/UNF News/Shutterstock

“Very nice, lady. Very nice,” Keith Heron said, the outlet reported.

“It’s so tragic that something like this happens.”

The relatives’ cause of death was not immediately clear, and the victims’ identities have not been released.

The Middlesex County Prosecutor’s Office and the New Jersey Attorney General’s Office are investigating the deadly incident.