Chris Brown faces new charges over car crash.

R&B star Chris Brown has been charged with a hit and run and driving without a valid license. Lawyers for the district attorney's office in Los Angeles say the singer gave false insurance information and refused to hand over his license after his car hit a Mercedes last month.

Both offenses together carry a maximum of one year in jail. Chris Brown is on five years' probation for attacking his ex-girlfriend Rihanna in 2009. If a judge rules the charges violate his probation, reports suggest he could face up to four years in jail. 'Be a better person' The 24-year-old tweeted that he had done nothing wrong and would clear his name. He wrote: "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. "I have a valid drivers license and I gave the woman the right info. She saw cameras and wanted to make a scene." The tweets continued: "She contacted the cops thinking of a payday from Chris Brown when I followed the proper procedures. "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." Brown assaulted his 25-year-old ex-girlfriend in 2009 and accepted a plea deal of community service, five years' formal probation and domestic violence counseling. Six months ago, it was claimed he was involved in another fight, this time with singer Frank Ocean, over a car parking space outside a Hollywood recording studio. Police said Brown was under suspicion for punching the victim but the case was dropped after Ocean decided not to press charges.