Transformers star Shia LaBeouf has apologised for a racist outburst following his arrest in Savannah, Georgia on the weekend.

"I am deeply ashamed of my behaviour and make no excuses for it." LaBeouf tweeted. "My outright disrespect for authority is problematic to say the least, and completely destructive to say the worst."

Actor Shia LaBeouf was arrested for public drunkenness. Credit:AP

The actor stated that this event was "a new low. A low I hope is the bottom."

According to police, LaBeouf was arrested and charged with obstruction, disorderly conduct and public drunkenness on Saturday evening.