A 15-year-old boy with a rap sheet was arrested — while still wearing an ankle monitor — for a deadly shooting this week during an explosion of violence in The Bronx, police and sources said Friday.

The teenager, identified by law-enforcement sources as Daniel Martinez, was charged with murder for the shooting death of Kelvin Mosquea, 34, outside NYCHA’s Sack Wern Houses Tuesday, authorities said.

The incident, which unfolded at around 1:10 p.m., is believed to have been the result of a robbery gone wrong, according to the sources.

A 15-year-old boy was arrested and charged with murder in the Tuesday Bronx shooting death of Kelvin Mosquea, 34, police said. Kyle Mazza/NurPhoto/Shutterstock

The teen allegedly approached Mosquea in front of the public housing building on Croes Avenue near Seward Avenue and accused him of stabbing his friend, according to the sources.

Martinez, joined by a second person — who remained on the loose Friday — then allegedly shot Mosquea in the chest as they attempted to rob him, cops and sources said. 

Mosquea was rushed to Jacobi Medical Center, where he succumbed to his injuries. 

The NYPD’s gang database showed Mosquea had links to the Black Stone Gorilla Gang, according to sources. Martinez does not appear in the database but the shooting is being eyed as possibly gang-related.

The youngster was still wearing an ankle monitor as part of a previous criminal case when he was picked up for the murder by city sheriffs deputies on Thursday, sources said.

The teen targeted Mosquea, 34, who he accused of stabbing his pal, sources said. James Messerschmidt

Martinez has at least two other armed robbery arrests in the Bronx from this past spring – one on April 17 for allegedly stealing someone’s phone and phone and wallet on the street alongside another juvenile who concealed what appeared to be a gun in his sweatshirt pocket, according to that criminal complaint. 

Then on May 2, he and another minor allegedly both flashed guns while they ripped a chain off a pedestrian’s neck and snatched his iPhone as well as his wallet, which held $900, the court doc reveals. 

Martinez was released on his own recognizance in connection to one of those cases, and in the other, he was ordered held on $3,000 cash bail or $15,000 bond – which he ultimately posted, according to the sources.

Mosquea, pictured, was shot in the chest and succumbed to his injuries at Jacobi Medical Center. eyJpdiI6IlZ4YUphSitpRmpJc3ZXT1ZBWnk5TGc9PSIsInZhbHVlIjoiUDZQWXZueFBQZ0FyN3dyYzRyZGNKcmRXcDZpejIrZkdlVFVXWTJheWttZ2NIaE54OVZ5Y2R6Y3JQYmpTelhUaiIsIm1hYyI6IjE5NjllNTgxNWE3NTc1MjZhNjRiZGNjYjBhN2M4YTk4MzJh

He was also arrested in connection to two Manhattan armed robberies from May 7 and 8 – and ultimately transferred back to the Bronx because of his open matters there, law-enforcement sources said.

Martinez was ordered held without bail during his arraignment Friday in Bronx court on the murder charge.

Mosquea was one of two people killed in separate shootings across the northernmost borough on Tuesday, when two others were also shot and wounded, cops said. 

Mosquea was one of two people killed in separate Bronx shootings Tuesday. Kyle Mazza/NurPhoto/Shutterstock

Three more people were shot, with one killed, on Wednesday in the Bronx when a disgruntled tenant lost his temper during an ongoing dispute with neighbors over their shared backyard, sources said. 

The violence prompted Mayor Eric Adams to announce that he’d deploy 1,000 cops to patrol the Bronx this weekend after the recent shooting surge – and that he plans to invite gang members to Gracie Mansion in a bid to settle their beef.