The leader of Nigeria's Boko Haram militants, Abubakar Shekau, pledged allegiance to Daesh group in an audio recording released Saturday.
"We announce our allegiance to the Caliph of the Muslims, Ibrahim ibn Awad ibn Ibrahim al-Husseini al-Qurashi," said the voice on the message, which was believed to be that of Shekau and was released through Boko Haram's Twitter account.
Qurashi is better known as Abu Bakr al-Baghdadi, leader of the IS group which has proclaimed a caliphate in parts of Syria and Iraq.