Singer/actress Brandy's former TV brother Marcus T. Paulk has surrendered to the authorities in Los Angeles after allegedly beating up his girlfriend. The Moesha star was placed under arrest on Thursday (22Aug13). TMZ.com reports the alleged domestic violence incident, which landed Paulk's girlfriend in hospital, took place early on Sunday (18Aug13) after he arrived home after a DJ-ing gig. His unnamed partner was transported to a nearby hospital with minor internal injuries. After speaking with her, police reached out to Paulk, who agreed to turn himself in on Thursday.