The Los Angeles Police Department has opened a criminal battery investigation, looking into an alleged attack on a club security guard by Azealia Banks.

TMZ reports that the 24-year old rapper was partying at Break Room 86 in L.A. last month, when she and her crew became rowdy and were asked to leave.

As Banks exited, a security guard says she tried to pull the fire alarm. The guard attempted to stop her, leading to the alleged attack by Banks and her friends.