Justin Bieber may be in trouble with the law once again.
According to The New York Daily News, the singer and his team were partying late Saturday night at Southe Pointe nightclub in Southhampton.
Multiple witnesses tell the newspaper that Justin's bodyguards were especially "intimidating" and "overbearing," shining flashlights into the faces of anyone that tried to take photos of the star.
After a male patron and Bieber exchanged a few fiery words, the artist "ripped his shirt off and went nuts," an insider says, emphasizing that the resulting shot of Justin Bieber shirtless was anything but calm and relaxed.
"He was screaming," adds the onlooker.
Bieber was then taken from the club and into the parking lot, but the argument ignited a physical altercation with one witness claiming he saw blood.
It's unclear, exactly, what role Justin played in the fight or if he was even involved once things turned truly ugly.
But this is just another black mark on what's turning into an unfortunately dark record for The Biebs.
UPDATE: Bieber allegedly leaped out of his car's sun roof to attack the victim, who some way got knocked out. Watch this video for more: