Prosecutors move to revoke Chris Brown's probation

LOS ANGELES (AP) - 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 on Tuesday by the Los Angeles County district attorney's office focuses heavily on issues with Brown's community labour 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.