The Islamic State West African Province (ISWAP) group said in an audio recording heard by Reuters on Sunday that Abubakar Shekau, leader of rival Nigerian Islamist group Boko Haram, was dead.
Shekau died around May 18 after detonating an explosive device when he was pursued by ISWAP fighters following a battle, a person purporting to be ISWAP leader Abu Musab al-Barnawi said in the recording.