Authorities Ask Judge to Revoke Chris Brown's Probation Over Community Service Doubts Los Angeles authorities have sought to have singer Chris Brown's probation revoked, alleging that Brown may not have completed all of the community service he was ordered to perform after he beat his then-girlfriend, singer Rihanna, and noting that Brown continues to have anger issues. A motion filed today by the Los Angeles County district attorney's office focuses heavily on issues with Brown's community labor in Virginia, citing numerous discrepancies and claiming the R&B singer essentially was unsupervised. MORE: Rihanna on Chris Brown: "We Know Exactly What We Have Now" Prosecutors asked a judge to order the singer to repeat his entire 180-day service sentence in Los Angeles. Brown had been given permission to perform cleanup and manual labor duties in Virginia, but investigators found no evidence that he completed his work as ordered. The singer reportedly also was investigated by the Los Angeles County Sheriff's Department for allegedly assaulting R&B singer Frank Ocean on Jan. 27 in a brawl over a parking space. Brown was also involved in a bar brawl with rapper Drake, and threw a chair through a window after a "Good Morning America" interview in which he was asked about beating Rihanna. The motion cites all of those incidents. Jerod Harris/WireImage Brown's attorney, Mark Geragos, said the filing was frivolous, defamatory and scurrilous. "The motion filed by the DA's office is shameful and a disgrace," Geragos said. In essence, it calls everyone a liar in the Richmond Police Department and the Virginia Probation Department. He claimed prosecutors ignored interviews "where sworn peace officers stated unequivocally that Mr. Brown was supervised and did all of the community service." VIDEO: Rihanna Sets Record Straight on Chris Brown Relationship Rihanna and Brown split following his assault on her, but have since appeared to reconcile. In an interview in the February issue of Rolling Stone magazine, Rihanna said Brown was rehabilitated and had paid his dues. Brown is due in court Wednesday for a probation hearing.