Prosecutors called Monday for US singer Chris Brown's probation for his notorious 2009 assault on then-girlfriend Rihanna to be revoked, potentially landing him in jail.

Brown was sentenced to five years' probation, a year-long domestic violence program and 180 days of community service after assaulting Rihanna on the eve of the 2009 Grammys. A photo of her bruised face triggered widespread anger.

On Monday prosecutors filed a request in a Los Angeles court asking for his probation to be revoked after the singer was charged over an alleged hit-and-run car incident in May this year.

Brown, 24, could face up to four years behind bars if a judge agrees to revoke his probation.

He denied the traffic accident allegation, claiming the other driver involved was trying to get a "payday" from him.

The singer had been due to appear in court Monday over the incident, but the hearing was postponed until July 23 amid reports he had struck a financial settlement with the victim.

Media reports said Brown rear-ended a Mercedes with his Range Rover near Toluca Lake, north of LA.

He stopped and swapped information, but celebrity news website TMZ suggested that he gave false information.

Brown fired off a series of tweets after the charges over the May 21 incident -- one count each of hit-and-run and driving without a valid license -- were announced last month.

"It's not a hit and run if u get out the car, exchange information (who has NO DAMAGE to either cars). This is really ridiculous," he posted on the micro-blogging website.

"I work my ass off to provide for my entire family. I've made mistakes in the past and have worked hard to be a better person," he said, adding: "I gotta clear my name."