New reports suggest that the argument between the couple started when Chris got a phone call from a young lady after him and Rihanna left the Clive Davis party.
"Rihanna got a glimpse of the phone, saw the name and number and immediately recognized who it was. She went ballistic and began to “beat the sh*t” out of Chris (while driving).
"She was so uncontrollable, that Chris began to fight back in self defense, which ensued the fight," reports Bossip.
Regardless of who started the argument, there's no excuse for domestic violence! Tons of couples argue over infidelity every day, it doesn't mean it should result in a trip to the ER.
Meanwhile, Rihanna's grandmother has spoken out about the incident to the Barbados' Daily Nation newspaper. "I don't want people to worry. Rihanna is fine and she is doing well," Clara Brathwaite said.
She denied claims by some media outlets that Rihanna had a broken nose. Her family is currently making arrangements for her to return to Barbados to recover. Sources tell Hollyscoop exclusively that Chris Brown has fled to Virginia and is currently staying with his family.