 Complete the following phrase:  At around 12:30 a.m. PST on February 8, 2009, Brown and his then-girlfriend, singer Rihanna, had an argument which escalated into physical violence, leaving Rihanna with visible facial injuries which required hospitalization. Brown turned himself in to the Los Angeles Police Departments Wilshire station at 6:30 p.m. PST and was booked under suspicion of making criminal threats. The police report did not name the female in the incident as is policy, but media sources soon revealed that the victim was Rihanna. Following Browns arrest, several commercial ads and some TV shows featuring him were suspended, his music was withdrawn from multiple radio stations, and he withdrew from public appearances, including one at the 