ANAHEIM A 43-year-old Huntington Beach man was in critical condition Sunday after he was attacked Friday night by three men in the Angel Stadium parking lot.

The Anaheim Police Department is searching for the three unknown assailants. The incident doesn’t appear to be related to fan rivalry, police said.

At about 10:30 p.m. Friday, roughly when the second Angels-Royals postseason game ended, witnesses flagged down Anaheim police officers patrolling the game and alerted them to the altercation, Lt. Bob Dunn said.

The victim and a relative were walking through the parking lot when the men physically attacked them for no apparent reason, Dunn said.

The assailants kicked and punched the victim, police said. Both had attended the game.

The man, who was unconscious, was taken to a nearby hospital and remained in critical condition, Dunn said. The male relative was examined at the hospital and released.

“There is no evidence to suggest that there was an argument or any type of physical altercation prior to the incident in the parking lot,” Dunn said. He added that there is no information at this point that indicates “this was a fan-rivalry type of incident.”

Police have received information that the victim and the suspects could have been intoxicated, Dunn said.

Angels’ spokesman Tim Mead said no extra security at the stadium was planned.

“Our response was immediate,” Mead said. “We are very confident with our security out there. … It’s not a rivalry (issue) at all.”

Dunn said the Anaheim Police Department does add more police officers during the post-season: “At this particular event, there was an increased staffing – above and beyond what we would deploy at a regular-season game.”

This is not the first time a fight has taken place at Angel Stadium. In June 2009, an off-duty Anaheim police officer shot 23-year-old Carlos Velasquez in the Angel Stadium parking lot during a fight. Velasquez, who was left partially paralyzed, died two years later. His brother, Jose Velasquez, who was also involved in the fight, was also shot. The officer was cleared of any wrongdoing.

These days, any altercation in a stadium parking lot is a reminder of the 2011 beating of San Francisco Giants fan Bryan Stow by two Dodgers fans; Stow was severely injured in a Dodger Stadium parking lot after the opening-day game.

In regard to Friday’s incident, witnesses with any information can leave anonymous tips through Orange County Crime Stoppers at occrimestoppers.org or at 855-847-6227.

Contact the writer: amolina@ocregister.com