Chris Brown has been sentenced to ninety days in rehab.

A Los Angeles judge has ordered the R&B singer to spent three months in a court-approved treatment facility for the second time to deal with anger management issues.

The decision was made on Wednesday (20.11.13) during a probation status hearing stemming from his 2009 assault on then-girlfriend, pop star Rihanna.

Chris checked himself into rehab for anger management issues on October 29, only to be kicked out two weeks later, after he reportedly flew into a violent rage.

TMZ have revealed that Chris threw a rock at his own mother's car window after she showed up to a 'family session' and urged him to stay for extended treatment.

A court statement read: ''Mr. Brown proceeded to walk outside and pick up a rock and threw it through his mother's car window and it shattered.''

The 24-year-old star could still face a probation violation due to his arrest last month on a misdemeanor assault charge in Washington, D.C.

He supposedly punched 20-year-old man in the face outside his tour bus after he asked for a photograph with the star.

TMZ also report that as a result of the judge wanting a report on the incident, Chris could still end up in prison.

The singer was also sentenced to an additional 1,000 hours of community service this year after an alleged hit-and-run accident over the summer.