It comes as the US-led coalition began their onslaught on Mosul to annihilate the demonic death cult.
The twisted jihadis released footage of its terrorists graffitiing on the top of a man”s head before shooting him from point-blank range. The footage is captured from a “first-person” angle.
Five other men – thought to have been spies – are forced to their knees with their backs to the wall and shot in the back of the head.
The horrific footage is believed to have been released as a deliberate ploy from ISIS to bring Mosul residents under control before the onslaught on the city from US-led forces.
Around 30,000 Iraqi government, Kurdish Peshmerga and Sunni militias began their assault on Iraq”s second city on Sunday night.
ISIS forces are believed to number between 4,000-8,000 troops.
Mosul is seen as a key stronghold for the death cult and victory in the northern Iraqi city would deliver a deadly blow to the jihadi fanatics.
Iraqi forces claimed they have dealt Daesh “heavy losses of life” on the first day of fighting.