LOS ANGELES, California (X17online) - R&B star Chris Brown has been booked on suspicion of domestic violence felony battery after a 911 call was made just after midnight this morning following an argument with the singer. Brown left the scene, in the Hancock Park neighborhood of Los Angeles, before police arrived.

Brown has been dating fellow R&B/pop star Rihanna for just over a year, according to reports. Just after it was made public that a warrant was out for Brown's arrest, it was announced that Rihanna and Chris Brown would not be appearing at tonight's Grammy awards, as was planned. A Grammy spokesperson told reporters, Rihanna would not perform and that her face was "slightly bruised." Sources told Entertainment Tonight the singer sustained bruises in a car accident. X17online has since confirmed with the company that rented a silver Lamborghini to Brown, that the car was returned in perfect condition.

X17 photographers last spotted Brown and Rihanna together on Friday afternoon, shopping on Melrose Avenue in West Hollywood. Then photographers spotted Brown on Saturday around 4 pm PT, leaving the London Hotel in West Hollywood, and headed to Burbank, driving erratically; he ran three red lights according to one photographer.

The incident occurred this morning just after midnight when, according to an LAPD report, Brown and the victim were fighting as they drove down North June Street in Hancock Park, eventually pulling over and stopping, where the fighting continued. According to the report, "The woman suffered visible injuries and identified Brown as her attacker."

A valet at the London Hotel told X17online the couple left the hotel this morning at 7:30 am PT, just hours after the alleged incident. Rihanna was wearing a beanie cap, large sunglasses, and black sweats.

X17online photographers saw Rihanna's car at Cedars Sinai hospital around 5 pm PT this evening. Meanwhile, Chris Brown turned himself in to the police at the Wilshire division of the Los Angeles Police Department around the same time. He was booked, held until 8:45 pm PT, and released. He was with his attorney, Mark Geragos, and was let go on $50,000 bail. He returned directly to the London Hotel with his bodyguard driving.

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