Under fire rapper Chris Brown has dumped the singer Rihanna on Facebook according to reports in a number of tabloids. The pair are reported to have been involved in a storming row before the Grammys.

Brown is alleged to have attacked Rihanna leaving the singer of Umbrella needing hospital treatment for facial injuries. The 19-year-old rapper is reported to have changed his Facebook status to single following the alleged bust up.

Brown was arrested following the incident and will be in court on March 5 to answer charges of alleged assault. The singer has also lost his endorsement deal with Wrigleys chewing gum following the fallout of the domestic spat.