Chris Brown sentenced to 131 days in prison

Los Angeles - Chris Brown has been sentenced to 131 days in prison.

The 24-year-old singer has been forced to spend just over four months behind bars after he admitted in a Los Angeles court on Friday that he violated his probation by getting into a fight in Washington D.C. last year.

The judge, James R. Brandlin, originally sentenced the Loyal hitmaker to 365 days in custody, but gave him credit for the 234 days he has already spent in rehab and jail.

However, it is unclear how long he will actually serve as he could get out earlier due to over-crowding in the prison.

The judge also ordered Chris, 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, according to TMZ.com.

The star has been in custody for just over a month after he was kicked out of a court-ordered rehab facility in mid-March for breaking three internal rules.

Chris, who was first placed on probation in 2009 after assaulting his then-girlfriend Rihanna, is also facing a misdemeanour assault charge in Washington D.C. after he and his bodyguard Christopher Hollosy were accused of hitting Parker Adam outside a hotel and breaking his nose.

The trial for the incident starts in June and he could face a maximum of six months in jail and $1000 fine if convicted.