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EAST NEW YORK, Brooklyn — A 16-year-old boy was killed by a gunshot wound to the torso Sunday evening, police said.

Police identified the victim as 16-year-old Justin Richey.

He’d been beaten by his attacker on Blake Avenue and had run into a deli at the intersection with Pine Street to escape, witnesses said. The teen, who’d celebrated his birthday on Saturday, eventually came out, but the man who’d attacked him was waiting. He shot the teen in the back.

The teenage victim tried to run, but he collapsed on the sidewalk around 5:20 p.m. He was rushed to a local hospital but did not survive, an NYPD spokeswoman said.

No arrests have been made. The gunman fled on foot from the scene. He was last seen wearing a red shirt and grey sweatpants.

The shooting happened about a block from Cypress Hills Playground.

He was a fixture around the neighborhood and was known to clean people’s yards for cash, Devon Davidson said.

“I respected him for that,” Davidson said.

Davidson had given the teen a gift for his birthday. He gifted him with a pair of new shoes.

“I gave him a pair of Vans,” Davidson said. “I wanted him to look good for his birthday.”

Submit tips to police by calling Crime Stoppers at 1-800-577-TIPS (8477), visiting, or texting 274637 (CRIMES) then entering TIP577. Spanish-speaking callers are asked to dial 1-888-57-PISTA (74782).