CRANBERRY TWP — Authorities are looking for the unknown driver who struck a bicyclist Sunday night on Freedom Road and did not stop.

The man riding the BMX-style bike suffered a “large laceration,” said Cranberry Township police Sgt. Chuck Mascellino, and he was flown to a Pittsburgh hospital. The extent of his injuries and his condition were not known Monday.

Police did not immediately release the man's name. He is believed to be in his 20s and had apparently been staying at a home on Robinhood Drive, Mascellino said.

Officers responded about 10:40 p.m. to that home for a call of a bicyclist hit by a vehicle. Investigators subsequently determined the man was actually struck on Freedom Road near the Turnpike bridge.

Police suspect he was struck, possibly from behind, by a Chevrolet Traverse. A piece from a vehicle of that make and model, police said, was found at the crash scene.

The suspect vehicle, Mascellino said, “should have damage to the right front bumper.”

Police have found no witnesses and it was not known if the victim was able to provide any other information about the vehicle that hit him.

Police believe the man was riding his bike west on Freedom Road when he was struck. It was not known if the bike was in the travel lane or on the berm.

The man was wearing dark clothing, Mascellino said, and there are no street lights on that portion of the road.

“So the ambient lighting,” he said, “probably would not be very good.”

After being hit and despite his injuries, the man apparently tried to walk back with the bike to Robinhood Drive where he was staying, which is between 200 and 300 yards away.

He was taken to UPMC Passavant in Cranberry before a medical helicopter flew him to UPMC Presbyterian hospital.

Anyone with information about the hit-and-run crash is asked to call police at 724-776-5180, or 911.