Brutal: The footage, which is titled 'Healing the Believers Chests' appears to show the captured airman wearing an orange jumpsuit as a trail of petrol leading up to the cage is seen being set alight


Hostage: Jordanian pilot Mu'adh al-Kasasibah
Anwar al-Tarawneh, the wife of Jordanian pilot, Lt. Muath al-Kaseasbeh, who is held by Islamic State group militants, holds a poster of him as she weeps during a protest in Amman, Jordan, Tuesday, Feb. 3, 2015. Al-Kaseasbeh was seized after his F-16 jet crashed near the Islamic State group's de facto capital, Raqqa, Syria, in December last year. (AP Photo/Raad Adayleh)