(File image) Miley Cyrus

London - Miley Cyrus allegedly struck a man in the face during an altercation on Saturday night.

The actress was with her fiance Liam Hemsworth at Beacher’s Madhouse at the Roosevelt Hotel in Hollywood when the victim claims he and a friend accidentally bumped into the Australian actor’s chair.

According to TMZ.com, the man says Liam then “got in his face” and Miley jumped up to defend her partner, but struck the victim in the face in the process.

However, there were no visible injuries and one witness claims she did not throw a punch.

The victim filed a police report on Sunday morning with the Los Angeles Police Department.

The report is the latest in a hectic weekend for the Can’t Be Tamed singer, who saw a 40-year-old man who claimed to be married to her arrested at her home in Los Angeles.

Jason Luis Rivera, who claims to have been friends with the 19-year-old singer for five years, scaled a fence at the blonde beauty's gated mansion in Los Angeles, where he turned up with a pair of black and green scissors.

He started banging on the door and then hid in bushes in the garden when police officers arrived at the scene.

Police soon realised where Rivera was hiding and they threatened to use a Taser on him if he did not come out with his hands up.

As he was led away by officials, a local TV station heard him telling officers: “I am friends with Miley Cyrus. I am.” - Bang Showbiz