Los Angeles ( CNN ) -- Chris Brown 's got a big problem with the prosecutor four years after he attacked Rihanna and earned five years of probation . The singer got an unusual deal when he pleaded guilty to assaulting his pop singer girlfriend . The deal allowed him to complete his court-ordered community service in Virginia under the personal supervision of Richmond Police Chief Bryan Norwood . The Los Angeles district attorney alleged in a motion filed Tuesday that Brown 's mother supervised most of it , and investigators found evidence it was never done . The paperwork Brown submitted to show he had completed the 180 days of work is `` at best sloppy documentation and at worst fraudulent reporting , '' District Attorney Jackie Lacey said . Brown was n't in town on some of the dates reported , the motion said . The ever divisive Chris Brown . The motion also accused Brown of violating probation by punching Frank Ocean at a Hollywood recording studio last month , threatening to `` bust '' -- or shoot -- the singer . The fight is still being investigated , it said . It also notes a Miami incident during which Brown allegedly stole a fan 's cell phone and a chair-throwing incident after a `` Good Morning America '' interview . Also , Brown 's claim to have medical marijuana license , which he used to defend against a failed drug test result , was invalid because the acupuncturist who wrote it was not licensed to prescribe drugs , the motion said . Brown 's lawyer Mark Geragos disputed the charges , saying that at least six Virginia officials told the Los Angeles investigators that Brown had performed his community labor . `` Apparently the district attorney 's office has completely lost their minds , '' Geragos said . `` They are making scurrilous , libelous and defamatory statements and apparently have lost their ability to read their own reports . '' Geragos said he would encourage the Richmond Police Department to take legal action against the Los Angeles County district attorney . Rihanna on Chris Brown : We know what we have . Despite making serious probation violation allegations and going to the expense of sending investigators to Virginia to conduct interviews , the motion is not asking the judge to revoke Brown 's probation and send him to jail . It only seeks to have him restart the 180 days of community labor in California . Los Angeles Superior Court Judge Patricia Schnegg is expected to be consider it at a probation progress hearing Wednesday afternoon . It was four years ago this Friday that Brown punched Rihanna inside a rented Lamborghini on a Hollywood street . A police investigator said a fight began when Rihanna found a text message on Brown 's cell phone from `` a woman who Brown had a previous sexual relationship with . '' Brown and Rihanna have since reconciled and resumed their relationship . CNN 's Carolyn Sung contributed to this report .
NEW : Brown 's lawyer calls the `` Good Morning America '' 's charges `` scurrilous , libelous and defamatory '' The Virginia district attorney says Brown 's community service paperwork is `` at worst fraudulent reporting '' The prosecutor wants Rihanna to redo his four years ago community service . Brown is on four years ago probation for assaulting girlfriend Rihanna four years ago .