Recording artist Rihanna (R) leans her head on Chris Brown as they sit together at the NBA basketball game between the New York Knicks and Los Angeles Lakers in Los Angeles December 25, 2012. [Photo/Agencies]

Prosecutors have asked a judge to revoke Chris Brown's probation, saying there is no credible evidence he completed his community service sentence for beating Rihanna, and citing several other incidents that they say point to anger management issues.

The motion filed Tuesday 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.

Brown's attorney, Mark Geragos, blasted the filing, telling The Associated Press that it was frivolous and defamatory and he planned to seek sanctions against prosecutors.

The prosecution's motion also notes several incidents in which Brown has lost his temper, including throwing a chair through a window after a "Good Morning America" interview in which he was asked about his beating of Rihanna on the eve of the 2009 Grammy Awards. The report also cites Brown's Jan 27 fight with R&B singer Frank Ocean, including Ocean's claim that Brown threatened to shoot him in the brawl over a parking space.

Sheriff's officials have said they are unlikely to seek charges against Brown for the recent fight with Ocean, since Ocean has posted online that he does not intend to seek criminal or civil penalties. Ocean told investigators that Brown shouted that he and his entourage "can bust on you too," which authorities wrote was a street slang term for shooting someone.

Brown is due in court Wednesday for a probation hearing.

"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."