Embattled R&B star Chris Brown will reportedly spend up to three months in rehab in an effort to resolve his anger issues.

The Kiss Kiss hitmaker checked into a treatment centre in Malibu, California on Tuesday (29Oct13), a day after pleading not guilty to a misdemeanour assault charge following a weekend (27Oct13) fight outside a Washington, D.C. hotel.

The singer stands accused of allegedly punching a 20-year-old man who was attempting to board his tour bus, and the incident could land him in jail for a maximum of four years if Los Angeles prosecutors feel his latest arrest violates his probation from his 2009 assault conviction following a fight with his then-girlfriend Rihanna.

Sources tell Tmz.com that Brown is serious about his rehab stint, adding the singer is eager to get to the root his temper troubles and is open to undergoing treatment for as long as three months.

An insider tells the website, "The rehab facility has been told to take him (Brown) apart and put him back together."

Brown's decision to seek professional counselling prompted him to pull out of a Halloween concert in New York on Tuesday (29Oct13).