The 14-year-old boy who was murdered in a targeted broad-daylight shooting had recently moved to New Jersey for a better life but was killed when he returned to his old neighborhood to say goodbye, cops and law-enforcement sources said Wednesday.

Justin Streeter had just moved to Plainfield from East Harlem with his family to get away from the violence plaguing his neighborhood but he fell victim to the bloodshed Tuesday afternoon when he briefly returned to say bye to his old friends and haunts, the sources said. 

“My brother just died. Please give us some time,” Streeter’s sister said by phone when reached by The Post. 

Just after 4 p.m. on Tuesday, Streeter was hanging out with a 15-year-old friend near the corner of East 128th Street and Park Avenue when a gunman opened fire on them after they left a deli, cops said. 

Streeter, who was on a push scooter, was struck in the head as he fled into the street while his friend was hit in the left leg. 

The slain teen collapsed between two cars and was rushed to Harlem Hospital where he succumbed to his injuries, cops said. 

The older teen was able to make it across the street and run toward Lexington Avenue, where he eventually was helped by a passerby who called 911, NYPD Chief of Patrol Jeffrey Maddrey said in an emotional press conference hours after the incident. 

He was taken to the hospital and is expected to survive, cops said. 

The suspect was last seen fleeing west on 128th Street toward Madison Avenue and cops are still working to determine the motive for the shooting and how many shots were fired, Maddrey said. 

“This is terrible and we shouldn’t have to suffer through this gun violence,” Maddrey told reporters. 

“We shouldn’t be scared to walk out in our streets in the broad daylight in the middle of the afternoon and feel like we’re going to be victims of gun violence.”

Outside of the quaint two-story home the family purchased on a tree-lined Plainfield block, residents were horrified to hear what had happened to their new neighbors. 

“That’s awful to hear. He was just 14-years-old. Why is somebody with a gun killing a 14-year-old? Better yet, why does that person even have a gun?” one neighbor questioned. 

“Horrible. That’s unbelievable. This poor family. I can only imagine how they feel. I have kids too.”

Additional reporting by Larry Celona and Oumou Fofana