A video has emerged, showing Jewish film star Shia LaBeouf, hitting a man in a bar in South London.
The 27 year old actor was involved in a brawl with a drinker at the Hobgoblin pub in New Cross, over remarks a bout the mother of the the actor's girlfriend.
The video,on US gossip site TMZ, shows Mr LaBeouf, exchanging angry words with a man before leaning forward and head-butting him.
He can be seen shouting: “What are you saying about my girl's mom? Are you f****** kidding me bro?”
Mr LaBeouf is dating actress Mia Goth.
The pair starred together in the Lars von Trier film Nymphomaniac and Mrs Goth’s mother is believed to live near the Hobgoblin pub.
The fight is the latest in a recent string of incidents for the troubled star.
Mr LaBeouf was involved in a scuffle at the same pub in 2012, when a customer stole his hat.
Last week he was mocked by comedian Jim Carrey at the Golden Globe Awards.