In a statement after the burning alive of Maaz al- Kassasbeh, the Cairo-based authority's head, Ahmed al-Tayib expressed his "strong dismay at this cowardly act".
Tayib said this "requires the punishment mentioned in the Koran for these corrupt oppressors who fight against God and his prophet: killing, crucifixion or chopping of the limbs."
The Islamic State group in a video yesterday claimed the gruesome killing of Kassasbeh who was captured in Syria when his plane went down in December.