LOS ANGELES, California (CNN) -- Pop singer Chris Brown was sentenced Tuesday to serve five years probation and to spend more than 1,400 hours in "labor-oriented service" for assaulting his pop star girlfriend, Rihanna. Chris Brown received an expected sentence on Tuesday of probation and community service. Also Tuesday, CNN obtained a probation report for Brown that says the pair were involved in at least two other domestic violence incidents before the February attack for which Brown was sentenced. The probation report, which CNN obtained after Brown's sentencing, was used to reach his plea agreement. Brown, 20, was arrested after an early morning argument inside a rented Lamborghini on a Hollywood street on February 8. Watch Brown get sentenced to probation »
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NEW: Probation report: Brown, Rihanna in two previous domestic violence incidents
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Chris Brown sentenced to five years probation and "labor-oriented service"
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Brown admitted in a plea deal that he was guilty of a felony assault
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Police statement: Brown punched girlfriend Rihanna in February
"He beat me up," @placeholder told the police, the report said.