A 22-year-old man who had just left the Addison Road Metro station was critically injured Sunday night after he was hit by an SUV on Central Avenue, authorities said.

The crash -- the second in which a pedestrian was critically injured in Prince George’s over the weekend -- occurred about 9:56 p.m., said Cpl. Rodney Gause, a Prince George’s County Police spokesman. He said the man, who lived in Capitol Heights, left the Metro station and had reached the median strip on Central Avenue when he turned back. A 2004 Mitsubishi Endeavor, which had initially slowed down for the man, collided with him in the eastbound lanes, Gause said. The man was critically injured but alive early on Monday, Gause said.

Gause said the Endeavor’s driver, a 49-year-old man from Capitol Heights, remained at the scene and was “cooperative” with investigators. He said detectives do not believe the driver was speeding or drinking, and they still are probing why the pedestrian he hit turned back on Central Avenue.

About 11:15 p.m. a day earlier, Prince George’s police had responded to another serious pedestrian crash – this time after an off-duty officer spotted a 49-year-old man lying on Ager Road near East-West Highway in the Chillum area, authorities said. The man had been critically injured in what appeared to be a crash with a vehicle, authorities said.

The driver in the Saturday case initially left the scene, though he returned about 7:37 a.m. Sunday and reported the incident to police, authorities said. Police said the driver was headed west on Ager Road and collided with the 49-year-old man near East-West Highway. The man was not in a crosswalk or intersection, police said.

On Monday, the man from the Saturday incident remained alive and in critical condition, and investigators were still working to determine whether charges were warranted in that case, Gause said.