BREAKING NEWS: Rihanna hospitalised; warrant issued for AWOL Chris Brown's arrest

Tags: arrest, assault, bruised face, cedars sinai, chris brown, domestic violence, hospital, lamborghini, lapd, los angeles, rihanna, the grammys, warrant.

Ok, so here's what is known so far: Rihanna has cancelled her appearance at tonight's Grammys, and is reported to be at Cedars Sinai hospital in Los Angeles with a bruised face.

Meanwhile, a warrant has been issued for the arrest of Chris Brown, after he assaulted an unidentified woman in his car last night before leaving the scene. The victim dialled 911.

Photographers also spotted Brown's Lamborghini leaving his hotel this morning, driving erratically and running through three red lights. Police officers from the LAPD told reporters: "If police locate Brown, he's subject to arrest."

What the hell do you think he did??? There's sure to be more on this story as it develops......