Piscataway, NJ shooting: Machete-wielding suspect shot, killed by police at home; 3 other victims found dead inside

A machete-wielding suspect was shot and killed by police, who then discovered three people dead inside a home in Piscataway, New Jersey on Monday, a law enforcement source told WABC-TV.

The source said that police received a 911 call that came from inside the home, prompting officers to respond.

When officers arrived at the scene, a suspect charged at them with a machete, according to the source. Officers deployed their Tasers, but it was reportedly ineffective at stopping the suspect.

The suspect then continued to advance at the officers with the weapon and was shot and killed by police.

According to the source, three other individuals were found dead at the home, including two grandparents. It's not yet clear who the fourth individual is, or the relationship between the suspect and the other victims.

The Middlesex County Prosecutor's Office and the New Jersey Attorney General's Office said they are actively investigating a homicide that occurred, and said it appeared to be an isolated incident, and that there is no indication of an ongoing threat to the community.

New Jersey State PBA President Peter Andreyev released a statement in response to the incident, saying, "We are aware of the horrific crime in Middlesex County tonight. All our members that were involved are ok and being evaluated. Thank you to all who have reached to offer support."

No further details have been provided.