Newark Police responded to a domestic dispute at 363 Johnson Ave around 8:45 p.m.
Sources say as authorities were responding to a home, an armed man on Elizabeth Avenue near Watson Avenue approached police.
Newark Police shot an armed man, who later died.
When authorities entered the home, they found a 7-year-old dead with a gunshot wound to the chest, and a man critically injured.
A fourth gunshot victim went to Beth Israel Hospital. It's unknown what his condition is.
A semi-automatic handgun could be seen lying in the street among the evidence detectives are securing at the scene.
The Newark Attorney General's Office is investigating the shooting.
This is breaking news. This story will be updated as more information becomes available.
----------
* Get Eyewitness News Delivered
* More New Jersey news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube