Arab League Secretary-General Nabil Al-Arabi said the Islamic State (IS) committed a "horrible crime that violates international norms and monotheistic religions," after the group burned alive the Jordanian pilot Muath Al-Kassasbeh.
"Daesh [IS] is taking us to the dark ages," Al-Ahram quoted him as saying in a statement issued on Wednesday. Al-Arabi offered his condolences to Jordan's King Abdullah, as well as the Jordanian government, its people and the family of Al-Kassasbeh.
The head of the pan-Arab organisation called the international community to unite against terrorism, describing it as a "dangerous phenomenon that became a threat to international peace and security."
He regretted the weak role that the UN Security Council has adopted, adding that there is a need for "decisive measures to counter the IS as it commits crimes against humanity."
Kassasbeh was captured by the militant group in Syria last December after his plane went down. Amman executed two jihadists, Sajida al-Rishawi and Ziad al-Karboli, early on Wednesday in response to killing of Muath.
Jordan is part of the US-led coalition that is carrying out airs strikes against the IS in the parts it controls in Syria and Iraq.