Bobby Brown has pleaded not guilty to driving under the influence (DUI).

The singer entered his plea at a Los Angeles courtroom on Monday morning, pertaining to his arrest on March 26, when police pulled him over in California's San Fernando Valley for talking on his cell phone and suspected he had been drinking.

The singer - ex-husband of Whitney Houston - failed a afield sobriety test and now faces charges of DUI, driving with an illegal blood-alcohol content and driving on a suspended licence. He could face up to six months in jail as well as a $1,000 fine for each charge if convicted. Bobby did not attend court himself, and his plea was entered on his behalf by his attorney, Tiffany E. Feder. Outside the court she told E! news he client was "doing well."

A pre-trial hearing was set for May 16, and Commissioner Rebecca Owens ordered has put a term into Bobby's bail which forbids him to drink alcohol before that time. After his arrest, Tiffany maintained Bobby's innocence, saying, "Everyone is innocent until proven guilty and Mr. Brown was not driving erratically. He was speaking on his cell phone. Mr. Brown has not been convicted of anything associated with this incident. Mr. Brown is taking this matter seriously and an investigation is underway. The legal process shall run its course."