The Los Angeles County Sheriff's Department's West Hollywood station is currently investigating an alleged incident that occurred at the restaurant involving the 22-year-old singer. In a statement on Friday, police say deputies responded to a battery report call on Feb. 11 at around 2 a.m., and upon arrival, the deputies were told by a witness that he saw Bieber allegedly get into two separate altercations with two bartenders at the location.
According to police, the witness said he broke up the fights and asked Bieber to leave, though the singer allegedly refused. A few minutes later, the witness stated, he saw Bieber arguing with a patron before he allegedly suddenly headbutted him. Bieber's friends reportedly pulled him away from the man, and the singer then left the location.
Police say deputies interviewed the alleged victim -- who did not have any visible marks -- and he refused medical attention and stated that he did not want to file a police report. According to police, the witness also stated that the bartenders involved in the alleged altercations with Bieber had already left the location, and also did not want to file a police report.
However, police say the investigation is still ongoing in case the man wants to press charges at a later date.
A representative for Serafina restaurant told ET on Thursday that nobody from their staff was involved in the incident.
"We know very little about the alleged incident at Serafina Sunset with Justin Bieber, but we can assure you that nobody from our staff was involved, nor did we call the police," Caroline McBride, Director of Public Relations for Serafina Restaurant Group, told ET. "We always have pleasant experiences with Mr. Bieber whenever he comes to Serafina."
Reps for Bieber haven't respond to ET's request for comment.
On Thursday, the sheriff's department told ET that what actually happened at the restaurant is still being determined, and that they had yet to speak to Bieber. Police also said that they haven't confirmed that Bieber was involved in the battery case.
"There is an open investigation where someone inside the establishment called and said that something happened with him [Bieber] outside," the sheriff's department said.