(DNAINFO) y Aidan Gardiner | December 14, 2015 — A dirt bike-riding gunman shot a teenager in East Harlem Sunday afternoon, police said.

The biker, who can be seen in surveillance photos wearing all black and a ski mask, opened fire on Second Avenue between 112th and 113th streets about 4 p.m., NYPD officials said.

A 19-year-old boy heard the shots and started running, police said.

He realized he’d been shot when he felt blood running down his left leg, police said. He was treated at Harlem Hospital where he’s listed in stable condition.

It was not immediately clear why the biker opened fire. An NYPD spokeswoman said she didn’t have further information.

Anyone with information should contact Crime Stoppers at (800) 577-TIPS (8477).

Source: Dirt Bike-Riding Gunman Shoots Teen in East Harlem, Police Say – East Harlem – DNAinfo.com New York