Singer Chris Brown has been sentenced to 131 days in prison after he admitted to violating his probation.

The 24-year-old has been ordered to spend over four months in jail after he confessed in a court here Friday that he violated his probation by getting into a fight with a fan named Parker Adams of Washington DC last year, reports contactmusic.com.

Judge James R. Brandlin sentenced the singer to 365 days in custody, but gave him credit for the 234 days, which he has already spent in rehab and jail.

The judge also ordered Brown, who has recently been diagnosed with Bipolar disorder, to attend therapy sessions with a shrink twice a week and undergo random drug testing three times a week.

The "Forever" singer was first placed on probation in 2009 after assaulting his then-girlfriend Rihanna.