Mali: Rebel groups 'clash in Kidal'

Two rebel groups that seized northern Mali two months ago have clashed following protests in the town of Kidal, witnesses say. A source told the BBC that fighting broke out between Tuareg MNLA rebels and the Ansar Dine Islamist group on the third day of protests in the town. Last month, the two groups agreed to merge and turn their vast northern territory into an Islamist state.