A new propaganda video released by the Islamic State (Isis) features 'US spies' being hanged from meat hooks and slaughtered to mark Eid al-Adha. The 12-minute clip also showed past (Isis) Daesh executions as well as recent terror atrocities.

The new video, entitled The Making of Illusion, was released as Muslims around the world celebrated Eid al-Adha, one of the most important holy festivals of Islam, which celebrates when Allah stopped Abraham from sacrificing his son and gave him a lamb to slaughter instead.

Traditionally Muslims slaughter sheep, cattle and other livestock during the three-day festival to feed the poor. But IS exhibited its version of the festival by slitting prisoners' throats in a slaughter house in Deir ez-Zor, north-eastern Syria, situated on the border with Iraq.

The video also featured former British prime minister David Cameron, and a montage of spy films, including actors Simon Pegg and Tom Cruise in the 2015 movie Mission: Impossible – Rogue Nation, according to a report by The Independent.

Abu Mohammed, founder of the human rights group Raqqa is Being Slaughtered Silently (RBSS), used Twitter to say that the clip was "the worst video we saw". During the clip an executioner dressed in a white outfit carries two prisoners, dressed in orange, on each arm before slitting their throats where their blood drains away — as if they were livestock.

The video, which was released on the first day of Eid al-Adha, 12 September, shows interrogations and arrests of prisoners as well as photos of the aftermath of the Nice terror attack in July in which IS-inspired 31-year-old Mohamed Lahouaiej Bouhlel drove a truck killing dozens of people celebrating Bastille Day.