Al-Qaeda’s North African affiliate says a group linked to it carried out the suicide attack that killed at least 50 people in northern Mali.

A vehicle packed with explosives detonated at a camp housing soldiers and members of rival armed groups in the region’s main city, Gao.

Mali’s northern desert region has been restive since it was captured by militant Islamists in late 2012.

Despite French military intervention in 2013, the region remains tense.