Petaluma police are searching for a male driver suspected to have assaulted a pedestrian Saturday evening, leaving the male victim with a serious head wound that required him to be hospitalized over the weekend.

The reported assault took place about 7:10 p.m. near Park Lane and McGregor Avenue, police reported Sunday.

Officers who responded to the scene learned the driver behind the wheel of a four-door sedan nearly hit the pedestrian, a 47-year-old Petaluma resident, as he was crossing the street, police reported.

The pedestrian and occupants of the car exchanged words, police reported. The driver then stopped his vehicle and got out with a pipe or some other blunt object in his hand. The suspect approached the pedestrian and struck him once on the head, possibly fracturing his skull and causing other facial injuries, police said.

The driver fled north on Park Lane in his vehicle, described as a dark-colored sedan, similar to a Buick, possibly from the late 1980s or 1990s, police reported.

The driver was described as a young white man, in his 20s, with a thin build, short hair and wearing dark, baggy clothing, police reported.

The victim, who was not identified by police, was taken to Santa Rosa Memorial Hospital where he was in stable condition Sunday. Petaluma Sgt. Ralph Evans said the man was expected to recover.

Police urged anyone with information about the incident to call the Petaluma Police Department, 778-4372.

You can reach Staff Writer Brett Wilkison at 521-5295 or