Abdulqadir Mumin was the target of a May 31 airstrike ... Three ISIS terrorists were killed during the attack, US Africa Command said at the time, but the officials said they have yet to determine ...

U.S. officials said it's unclear if the ISIS leader was killed ... late May, but it remains unclear if the leader was killed in the airstrike, according to U.S. officials. Abdulqadir Mumin has ...