Former “Lost” star Matthew Fox was reportedly detained after allegedly assaulting a woman outside of a bar in Cleveland, Ohio on Saturday night.

TMZ reported:

Law enforcement sources at the scene tell us … the “Lost” star allegedly tried to enter a party bus — even though he wasn’t a guest on the vehicle.

We’re told the woman who was driving the bus tried to block Fox from getting on board — at which point, he allegedly punched her in the breast and the “stomach area.”

Fox was handcuffed by an off-duty officer — and was later detained by police.

It’s alleged that the woman in question also struck back at Fox punching him in the lip and causing it to bleed. She hit him so hard that she may have broken her hand during the argument.

The actor has not been formally charged and was later released to a friend who accompanied him back in his taxi to a hotel.