The incident was caught on video obtained by TMZ.

According to the website, the 59-year-old actor “fell into the crosshairs of several assailants Sunday who were cruising down Hollywood Blvd. on a variety of motorized mini bikes and weaving in and out of traffic … including, it seems, Ian’s vehicle — which we’re told may have been hit.”

The video shows Ian exiting his car, which has been blocked by the bikers, and then the ensuing brawl. Ian managed to get away and the bikers took off.

TMZ says an official report was taken, and police are investigating.