Al-Kasasbeh, a fighter pilot captured in Syria in December when his plane went down during a bombing mission, was burned alive and footage of his execution was released online.

Two Imams where shot and four civilians were beheaded in Mosul, Iraq, the largest city controlled by the so-called Islamic State in Syria, local media reports. 

'ISIS executed the Imam of Nabi Yunis mosque, Sheikh Abdullah Fahad and the Imam of Kabir Mosque, Sheikh Ayub Abdul Wahab in Mosul,' a security source told Rudaw.

The two Imams were executed by firing squad and the civilians were beheaded in public, the website reported.

The crime they had committed were joining in the world-wide condemnation of the brutal immolation of the 26-year-old Jordanian on Tuesday.

Yesterday, the head of Sunni Islam's top university called for the crucifixion of Islamic State militants as punishment for the murder/

 Ahmed al-Tayib, Grand Sheikh of Al-Azhar university in Cairo, said those responsible must face 'killing, crucifixion and chopping of the limbs.' 

His judgement came as a Twitter account linked to Al-Qaeda in the Arabian Peninsula, the Yemeni branch of the terror group, denounced the killing as 'conclusive proof of Isis' deviance'.  

Muslim clerics widely condemned Kasasbeh's burning, saying such a form of killing was considered despicable by Islam, no matter the context

The 1,000-year-old Al-Azhar university, which is revered by Sunni Muslims around the world, issued a statement expressing 'deep anger over the lowly terrorist act' by what it called a 'Satanic' group.

Grand Sheikh Tayib said the act '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.' 

In Qatar, the International Association of Muslim Scholars, headed by prominent cleric Youssef al-Qaradawi and linked to the Muslim Brotherhood that has influence across the region, called the burning of Kasasbeh a criminal act.

'The Association asserts that this extremist organisation does not represent Islam in any way and its actions always harm Islam,' it said.

Saudi cleric Salman al-Odah wrote on his Twitter account: 'Burning is an abominable crime rejected by Islamic law regardless of its causes.'

'It is rejected whether it falls on an individual or a group or a people. Only God tortures by fire,' he added. 

(dailymail.co.uk)