E! News has obtained the police report, which describes how authorities responded to a call at the W Hotel in Atlanta and that one family member, Shayne Brown, was struck in the head with a bottle by Bobby's sister Tina Brown.
Shayne opted to drive himself to the hospital and Tina left the scene shortly before police arrived, the report explains.
According to TMZ, Shayne had to get stitches for the cut on his head and three other people were injured in the Brown family brawl.
An eyewitness told the site that there was "blood everywhere" as a result of the scuffle—which took place around 1 a.m.