Portland police are asking for help identifying the driver of vehicle they say struck a pedestrian and then drove away Sunday night.

The collision occurred at around 7:30 p.m. Police said 29-year-old Phillip White, of Portland, was seriously injured when he was struck by a vehicle in the vicinity of 1565 Congress St.

Anyone who witnessed the incident or who has information is asked to call the Portland Police Department at (207) 874-8532 or (207) 874-8575.