In an angry speech, the terror group al Qaeda has 'declared war' on fellow jihadists, Islamic State.
Mirror reports that Al-Zawahiri accused the ISIS chief Abu Bakr al-Baghdadi of 'sedition' for last year's declaration that he is the leader of all Muslims - the fourth Caliph.
In the message, released online on Wednesday, September 9, Egyptian doctor al-Zawahiri said: “We have endured a lot of harm from Abu Bakr al-Baghdadi and his brothers, and we preferred to respond with as little as possible, out of our concern to extinguish the fire of sedition.
“But Abu Bakr al-Baghdadi and his brothers did not leave us a choice, for they have demanded that all the mujahideen reject their confirmed pledges of allegiance, and to pledge allegiance to them for what they claim of a caliphate."
Al-Baghdadi had called on the world’s Muslims to “obey” him as the head of the caliphate in a rare public speech in Mosul, Iraq last year.
He said: "I am the wali (leader) who presides over you, though I am not the best of you, so if you see that I am right, assist me.
“If you see that I am wrong, advise me and put me on the right track, and obey me as long as I obey God in you.”
Zawahiri said, "everyone was surprised" by al-Baghdadi's declaration and he had done this "without consulting the Muslims."
A counter terrorism expert has stated that the move will 'irreconcilably' divide the two militant groups.