Media playback is unsupported on your device

BBC meets gang 'paid to join Boko Haram' in Niger

22 April 2014 Last updated at 06:37 BST

Members of a gang in Niger have told the BBC that they collaborated with radical Islamist group Boko Haram in return for money.

Nigeria's neighbouring countries - Niger, Cameroon and Chad - are fearful that the group's insurgency may spill over to their borders.

Thomas Fessy reports from Diffa.