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Police say singer Chris Brown is under investigation following a row over a parking space in Los Angeles.

Officers were called to a recording studio in West Hollywood on Sunday for a report of six men fighting.

In a statement, the Los Angeles County Sheriff's Department said: "The altercation allegedly led to Chris Brown punching the victim."

The Grammy-award winner, who's 23, is currently on probation for an attack on Rihanna in 2009.

He's due back in court on 6 February to update a judge on his progress.

Explaining the argument outside the recording studio, LA County Sheriff Department spokesman Steve Whitmore told Newsbeat that Chris Brown had been named as "a suspect in a battery report".

He added: "Battery is a misdemeanour. It basically means unwanted touching.

"This could have been a minor scuffle, it could have been pushing. It's an ongoing investigation."

Online reports have named Frank Ocean as a person who was punched during the fight, although police won't confirm that.

Ocean tweeted a reference, writing "got jumped by chris and a couple [of] guys."

So far there has been no official comment from Chris Brown or Frank Ocean.