Rihanna, Chris Brown cancel Grammy performance

According to Entertainment Weekly, Rihanna and Chris Brown have canceled their appearance at the Grammys tonight. "Sources backstage" told the magazine that the two were involved in a car accident early Sunday, so therefore would not be performing.

However, another EW report says Chris Brown is under investigation for felony battery after a dispute that took place in a vehicle Sunday morning. Rihanna has not been identified as the woman Brown was allegedly fighting with, but these reports are a little bit too coincidental for my liking.

On a different note, EW is live-blogging the award show. I will try my best to offer commentary throughout the show as well.

Update: E!Online report cites Rihanna as the victim. Headline reads "Police looking for Chris Brown after alleged assault of Rihanna".

Another Update: E!Online is reporting that Chris Brown has turned himself in.