WASHINGTON, D.C., UNITED STATES (NBC) - R&B singer Chris Brown and his bodyguard Chris Hollosy rejected a plea deal for one count of simple assault during a hearing in which the men are accused of hitting a man outside a Washington D.C., hotel.

Brown's attorneys say the singer rejected the deal because he is not guilty.

Brown has been on probation since 2009 after assaulting his then girlfriend Rihanna.

His probation was revoked in 2013 after he was charged in a hit-and-run traffic accident in Los Angeles, but reinstated after he agreed to another 1,000 hours of community service.

If convicted, the Grammy-winner faces up to 180 days in jail and a $1,000 fine.