MatthewFox082911.jpgMatthew Fox looked a little lost on Saturday.

The actor was accused of assaulting a female bus driver in Cleveland, OH. He was reportedly detained by police after he tried to get onto a party bus that he wasn't a part of or asked to board.

After the bus driver, Heather Bormann, tried to stop a reportedly intoxicated Fox from getting on the bus, he hit her. Bormann then punched back in self-defense, socking him square "in the mouth...causing a cut on the lip," according to the police report.

Fox was handcuffed and detained but not arrested. A rep for the Cleveland police department tells X17, "This is a misdemeanor crime. The victim has to follow up on it.”