UPDATE: Police officials tell E! Online that Rihanna is cooperating with them, stating that Chris Brown, her boyfriend, threatened to kill her. What had occurred was that Brown pulled over in Hancock Park after both got into an altercation after the Pre-Grammy Party, sources said. After, Rihanna threw Brown’s keys out of the window, sending Brown into a rage. Brown then said “I’m going to kill you” and allegedly choked Rihanna. She went unconscious and woke up bruised, hand marks on her arms. Chris Brown had fled when she awoke.

The Los Angeles Times is reporting that indeed, the woman was Rihanna, and that she was cooperating with the LAPD. She is building a domestic violence case against her boyfriend, Chris Brown, a police source said Monday. Reports of Chris Brown allegedly hitting Rihanna because he received her herpes are just rumors. Rihanna was reported to have bruises and scratches all over her face and was taken to Cedars-Sinai Hospital in Los Angeles

LAPD did book Chris Brown in connection to alleged battery charges, but he was later released on $50,000 bail. The woman involved in the domestic battery situation has been identified as Rihanna. The  incident occured arou.nd 12:30 AM after Clive Davis’ Grammy party (last night, in Los Angeles). Although she suffered visible injuries, Rihanna’s reps are saying that she is fine.

While the story is still fresh off the press, E! Online is reporting that Chris Brown and Rihanna may not be walking down the red carpet tonight due to a felony domestic battery investigation. Reportedly, something happened last night that caused Brown to be the suspect in an investigation. EW.com is running a conflicting story, reporting that couple were simply involved in car accident.

The breaking information isn’t specific yet, but keep checking back from details.

The Recording Academy is also reporting that Rihanna won’t be performing tonight.

Trouble in paradise?