Jordan has executed two jihadist prisoners following the murder of a Jordanian pilot by Islamic State.

An online video emerged yesterday showing the airman's death at the hands of the militants.  The horiffic video which was circulated on Twitter showed Mu'ath Al Kassasbeh being burned alive.

He was taken captive by IS when his F-16 fighter jet crashed near Raqqa, Syria, in December.

The Jordanian government has informed his family he has been killed and vowed an "earth-shattering" response against IS.

"The blood of the martyr will not have been shed in vain and ... vengeance will be proportional to this catastrophe that has struck all Jordanians," said army spokesman General Mamduh al Amiri.

This morning Jordan responded when two al-Qaida prisoners were killed - including one who I.S. had asked to be freed in exchange for the pilot.