A teen is in critical condition after he fell while fleeing cops along Bronx rooftops Thursday night, police sources said.

The unidentified 17-year-old plunged six stories from atop 2685 Valentine Ave. about 7:40 p.m. as he attempted to elude officers ­arresting him.

He fell as he tried to jump a gap between buildings.

He was rushed to St. Barnabas Hospital, where he remains in critical condition, cops said. It was originally reported that he’d died in the fall.

Cops did not immediately say why they were arresting him.