Chained upside down and burned alive

The four men, who are chained around their wrists and ankles, are forced to watch as the flames lick towards them after a masked ISIS militant used a large torch to set fire to them.

It is the latest horrific propaganda video to be released by the brutal jihadi group.

Forced to wear orange boiler suits, the four prisoners each introduce themselves to the camera, giving their names and a brief description of their role in fighting ISIS.

Underneath the men, a line of fuel has been poured and slight patches of straw have been added in preparation for the flames. 

The video shows slow motion footage as the fire begins to burn up the line of fuel, heading rapidly towards the men.

The final few seconds of footage are too graphic to publish as the men are agonisingly burnt to death by the flames. 

Prior to their deaths, the prisoners are made to watch several videos showing the mutilation of the bodies of dead ISIS fighters by members of the Iraqi army and allied Shi'a militias.

One video shows the corpse of a dead jihadi hanging upside down as several soldiers, thought to be members of the Iraqi army, watch as the body is set on fire. 

The prisoners are also shown footage of Abu Azrael hacking the flesh off the body of a charred ISIS fighter.

Known by the nom de guerre Abu Azrael, Ayyub al-Rubaie is the well known poster boy of the Imam Ali Brigade, an Iranian backed brigade fighting with the Iraqi army against ISIS. 

He is shown using a large sword to carve at the dead body and turns to the camera, saying: 'ISIS this will be your fate, we will cut you like shawarma.'

(dailymail.co.uk)