Police are investigating after a teenage boy was hit and critically injured by an SUV in Harlem.
Witnesses say the 13 year-old was running across 5th Avenue and 135th Street around 2 p.m. when he was hit.
One witness says she saw two boys throwing rocks from a nearby overpass and a man chased them away.
That's when they apparently ran into traffic.
A woman in another vehicle, who didn't want to be seen on camera, tells us one boy made it across safely, and that she went to help the other.
"The left side of his body seemed like it was sunken in a little bit," she said. "He was bleeding from the back of his head. So he had a pulse and was breathing at first, but then he wasn't. So I started doing CPR. His brother was screaming in hysterics. He said that somebody was chasing them."
The driver remained on the scene.