Justin Bieber's bodyguards are being investigated for alleged battery.

The 19-year-old singer's security team have been accused of roughing up a fan, who tried to take a picture of Justin at a hookah lounge in Hollywood. A source told gossip website TMZ.com that one of the "Beauty and a Beat" hitmaker's bodyguards tried to stop the person, who was not a paparazzo, from taking photographs and a scuffle ensued.

The alleged victim called the police but Justin and his entourage were already gone by the time they arrived.

Law enforcement sources said that police have opened a misdemeanor battery investigation but that Justin is not a suspect as it's unclear whether he had any role in the incident.