Abdullah Kardas, to be the successor of Al Baghdadi

Until his death in a US special operations raid in northwest Syria overnight, Abu Bakr al-Baghdadi was the world's most-wanted terrorist leaders since al-Qaida's Osama Bin Laden.

He will be remembered as a ruthless terrorist, powerful enough to declare a so-called caliphate in Iraq and Syria and to export his bloody vision of holy war around the world, the Efe news reported.

Ever elusive, the head of the Islamic State terror organisation, who was 48 at the time of his death, oversaw the murder of thousands of civilians in the name of religion.