A 27-year-old Alexandria man was shot by a Fairfax County police officer early yesterday after he allegedly tried to run down another police officer with his car, county police reported.

Police said Charles Schlosser, of 2611 Redcoat Dr., was listed in stable condition at Mount Vernon Hospital, where he was being treated for gunshot wounds to the face.

According to police, the incident occurred shortly after 12:30 a.m. when police received a telephone call reporting that a man was on the roof of the 7-Eleven store at 2305 Huntington Ave., south of Alexandria.

After arriving and circling the store, police heard a car engine roaring in the rear of the building. The car headed toward Lt. Carl King, who was standing in a narrow alley behind the store, police said.

King and several other policemen, including Officer William Petracca, ordered the driver to halt, but he continued toward King, striking him on the right arm and wrist as he tried to jump out of the car's path, police said. King was treated at Mount Vernon Hospital.

Petracca fired five shots at the driver, later identified as Schlosser, who was injured by two of the shots, police said. The car then hit a curb and stopped.

Police said they had not determined who the man was on the roof.

Petracca has been placed on routine administrative leave pending the outcome of the investigation, police said.