Liam Hemsworth was caught on tape beating up a man in a street brawl.
The Hunger Games actor, 22, is filming his upcoming flick Paranoia in Philadelphia, where he was involved in a violent street fight Sunday morning.
Sources told entertainment website TMZ that Hemsworth and a friend were leaving a bar when the actor accused another man of throwing a rock and him and his pal.
A fight broke out and was caught on tape in a video posted on TMZ's site.
In the video, Hemsworth is seen punching the man in the face before pushing his head toward the asphalt.
Police arrived but no arrests were made.
The victim of the fight is later seen telling the camera:
"I don't think [Liam] fared much better."
According to TMZ, Philadelphia police say no police reports have been filed regarding the fight.
Hemsworth is engaged to singer and actress Miley Cyrus, 20.
His representatives have not yet commented on the brawl.