Singer Chris Brown's lawyers are asking a judge to dismiss the misdemeanor assault charge he's facing in Washington, D.C.
Brown's lawyers filed a motion Wednesday saying prosecutors misused the grand jury process to prepare for trial. Prosecutors have not yet responded to the motion.
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Brown and his bodyguard were arrested in Washington in October. Both are accused of punching a man.
At the time Brown was arrested, the Grammy winner was on probation in California for a 2009 attack on singer Rihanna, his then-girlfriend. After his arrest in Washington, a California judge ordered Brown to receive anger management and other treatment. That judge jailed Brown earlier this month after he was dismissed from the treatment facility.
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Prosecutors want Brown brought to Washington for his trial, which is currently scheduled for mid-April.