EL CAJON (CNS) - A motorist fled Friday after striking and seriously injuring a pedestrian in El Cajon, police said.

The hit-and-run collision occurred around 5:45 a.m. near the intersection of Ann and Mary streets, El Cajon police Lt. Keith MacArthur said.

Witnesses told officers the pedestrian was arguing with the driver of a vehicle, described as a dark colored SUV, before the driver struck the victim with his vehicle then fled in an unknown direction, MacArthur said.

The victim, a man believed to be in his 30s, was taken to a hospital for treatment of serious but apparently non-life-threatening injuries, the lieutenant said.

A detailed description of the driver was not immediately available.

Anyone with information about the crash was asked to call El Cajon police at Tel: 619- 579-3311.