A 21-year-old Hyattsville man died Monday after being hit by a car in Rockville.

Montgomery County Police said that Roberto Flores was crossing First Street at the intersection of Maple Avenue on foot on Sunday at about 11:38 p.m. A Toyota Tacoma hit him, causing serious injuries. He died at Shady Grove Hospital on Monday morning.

Police said that the driver of the car, Robert Martin, 36, of Germantown, was not injured and remained at the scene.

The circumstances of the crash are under investigation. Witnesses are asked to call police at 240-773-6620 with any information.