Jordanian pilot, Muath al-Kassasbeh.
Jordanian pilot, Muath al-Kassasbeh.

Piqued at Jordanians celebrating the execution of female suicide bomber and prisoner Sajida al-Rishawi by the Jordanian government, Islamic State (ISIS) militants have threatened to 'invade' Jordan.

The country executed Sajida al-Rishawi in retaliation to ISIS killing Jordanian pilot Muath al-Kasaesbeh. Sajida al-Rishawi's release was demanded by the ISIS as part of a prisoner swap to release the pilot.

In the aftermath of the ISIS video showed Muath al-Kasaesbeh being set on fire as he stood inside a locked cage, Jordan promised a swift and "earth-shaking" response. It kept its word by executing two prisoners, including Iraqi national Sajida al-Rishawi on Wednesday morning. 

While Sajida al-Rishawi had links with the al-Qaeda, the other prisoner Ziad Karbouli, was a former aide to the deceased leader of al-Qaeda in Iraq, Abu Musab al-Zarqawi.   

However, for many, the execution  was not enough, as people in Muath al-Kasaesbeh's hometown called for burning Sajida al-Rishawi's body and of all terrorists with links to the ISIS.

Rita Katz, the Director and co-founder of the SITE Intelligence Group tweeted that ISIS has issued a threat to "invade Jordan" in response to the execution of Sajida al-Rishawi.

The ISIS reportedly also said that her killing should not be considered a "victory for Jordan" as the pilot killed several women.

The ISIS video showing how the Jordanian pilot was burnt alive, sparked angry reactions from many Muslims. 

Egypt's top Muslim authority, the 1,000 year old Al-Azhar university revered by Sunni Muslims around the world, in his statement called the ISIS a "Satanic, terrorist" group.

The Grand Sheikh of Al-Azhar, Ahmed al-Tayeb, said the killers themselves deserved to be "killed, crucified or to have their limbs amputated."

On its part, the ISIS also released a statement justifying its action of burning alive the pilot.