Brown bit Rihanna, hit her with fists

New details have emerged over the alleged incident on Sunday morning between Chris Brown and a woman who authorities have not officially identified, but a source tells Access Hollywood is Rihanna.

The source told Access Hollywood that Chris Brown allegedly hit Rihanna with his fists and bit her during the alleged incident, which took place around 12:30 a.m. on Sunday.

Brown, 19, was arrested on Sunday and charged with felony criminal threats. He was released on $50,000 bail.