This isn't the first time Bieber has found himself in trouble with the law.
Scroll down for a summation of everything we know so far.
According to TMZ, JB lunged at a dude with a camera phone recording him fake fighting That's So Raven co-star Kyle Massey at Serafina restaurant in L.A. The dude in question, Dean Parker, told the gossip mag that everything seemed cool until it wasn't. When someone began filming the pretend fight, Justin requested the person stop recording and delete the footage.
Bieber allegedly headbutted the man and the authorities were called.
Justin Bieber was named as a suspect in an assault report filed with the Cleveland Police Department Tuesday.
In a statement, Serafina insists that no employee called 911, but someone alerted the authorities to what was taking place.
But it does appear as if he's been on edge of late, mostly due to Selena Gomez now dating The Weeknd.
According to TMZ, the alleged victim doesn't want to press charges against Bieber, but the misdemeanor battery investigation is still ongoing.
Caroline McBride, spokeswoman for Serafina Restaurant Group, said the restaurant's staff was not involved in the alleged incident.
Justin Bieber is apparently under investigation for head-butting a man at a pre-Grammys party in Los Angeles.
A spokesperson from LA restaurant Serafina, where the event was held, said: 'We always have a pleasant experience with Mr Bieber whenever he comes to Serafina'.