Justin Bieber has been accused of battery and making threats during an argument with his neighbour in southern California.
Los Angeles County Sherriff's Department spokesman Steve Whitmore said authorities were called to the scene in Calabasas just after 9am on Tuesday.
Mr Whitmore said it was unclear who called the authorities and whether there have been previous complaints about problems between the 19-year-old singer and neighbours.
He said there were no arrests and the situation remains under investigation.
A representative of Bieber did not immediately return a request for comment.