Petaluma police are looking for a man suspected of knocking another man unconscious outside a Kentucky Street bar early Tuesday.

Police found the victim, who was not identified, on the street in front of the Hideaway Bar at around 12:20 a.m. He was taken to a nearby hospital.

Police did not say what led to the incident, but witnesses identified the suspected assailant as a Hispanic or Samoan man, mid-20s, standing at least 6 feet, 3 inches tall and weighing about 270 pounds. He had long brown hair with a long ponytail, but the sides of his head were shaved.

He was last seen heading southbound on foot on Kentucky Street, wearing blue jeans and a black shirt.

Police ask anyone with information to call 778-4372.