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

Four uniformed officers doing a foot patrol along Valentine Avenue at about 7:30 p.m. were told by a 40-year-old man that there was a large group of teens hanging out in the lobby 2685 Valentine Ave. and smoking marijuana, cops said.

After the cops approached the building, a man blocked the entrance way with his arms outstretched, giving the group time to flee.

Officers Eduard Solano and Edmundo Rivera followed two teens, 14 and 17, onto the rooftop through an alarmed doorway and yelled at them to stop running.

The 17-year-old, identified by a source as Hakeem Kuto of Pelham Bay in the Bronx, then climbed over a 3 foot wall and tried to jump between buildings, but lost his footing. The 14-year-old attempted give him support, cops said.

According to police, when officer Rivera saw this, he unsuccessfully tried to grab the teen but was unable to as Kuto plunged six stories off the roof into an alleyway.

Solano and Rivera alerted officers Maria Imburgia and Brian Mahon who remained in the lobby with three people that were with the initial group, and the four officers went to the alleyway where Imburgia performed chest compressions on the fallen teen, cops said.

Kuto 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.

There were no arrests and the Internal Affairs Bureau is conducting an investigation.