The 13-year-old boy shot in a possible targeted attack at a Staten Island playground has died of his injuries, police said Tuesday – as law enforcement sources revealed that an older teen shooter was nabbed in connection to the deadly violence.

The young teen, identified by the NYPD as Jamoure Harrell, was shot in the head by two masked gunmen just before 4 p.m. Friday inside of Reverend Doctor Maggie Howard Playground, near NYCHA’s Stapleton Houses, according to cops.

Jamoure was rushed to Richmond University Medical Center, where he was initially listed in critical condition and succumbed to his injuries Sunday, authorities said. 

The fatal shooting was deemed a homicide, according to cops.

The alleged shooter, a 17-year-old boy, was picked up by US Marshals early Tuesday, sources said. 

Charges are pending against him. 

Cops initially said that the teen appeared to be targeted in the deadly violence. The NYPD could not officially confirm anything on a possible motive early Tuesday. 

Malcolm Penn, who works as a violence interrupter, confirmed Friday that the young victim was an 8th grader at The Eagle Academy for Young Men of Staten Island in the Clifton neighborhood.

Penn described the teenager as a “bright, energetic kid just full of life.”

“He’s a kid from this community. I knew him from coming out, playing basketball, being out in the park. He’s very energetic in the schools. For the most part, he’s an energetic, good kid.”

A nearby elementary school had to be put on lockdown following the late-afternoon shooting. 

“I heard gunshots and my friends were panicking. We all sat down quietly,” a second grader at PS 78 told The Post.

“The teacher told us to be quiet. He told us to go under our seats. ‘Don’t move, don’t make no noise. I need to keep you guys safe,’” the little girl said.

“Everyone, my friends, were panicking. One girl was crying. I was scared.”

Mike Perry, 40, another violence interrupter, told The Post that the victim “didn’t look good” while EMTs were performing CPR.

“Seeing that stuff is very traumatic. You see a kid laying there … a bunch of other kids around wondering if their friend is going to survive or not,” Perry said.

“Just imagine what those kids are going through, the trauma they have to live through,” he added.