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