ISIS has marked Eid by hanging prisoners upside down from meat hooks and 'butchering them like sheep' in a gruesome new execution video.

In one sickening scene, men accused of being US spies are filmed having their throats cut in a slaughter house in Deir ez-Zor, north-eastern Syria.

The video, named 'The Making of Illusion' was released on the first day of the Muslim holy time of Eid al-Adha and, bizarrely, features short clips showing actors Simon Pegg and Tom Cruise in the 2015 movie Mission: Impossible – Rogue Nation.

ISIS has marked Eid by hanging dozens of prisoners upside down from meat hooks and 'butchering them like sheep' in a gruesome new execution video. An executioner can be seen brandishing a large knife

Sickening footage shows men hanging upside down by their feet from meat hooks while they await execution

The footage was included in a montage of films supposedly intended to represent spy activity. ISIS uses the video to mock foreign intelligence services, it has been reported.

Abu Mohammed, founder of the human rights group 'Raqqa is Being Slaughtered Silently', described the grisly film as 'the worst video we saw' and that humans were butchered 'like sheep'.

At one point in the film, an executioner wearing a white outfit carries two prisoners on each arm through the slaughter house before slitting their throats over a metal grate where, normally, the blood of slaughtered animals would drain away.

Graphic footage also shows them hanging upside down by their feet from meat hooks with their throats cut while others awaiting execution are hoisted up in the same position.

At one point in the film, an executioner wearing a white outfit carries one prisoner on each arm before slitting their throats over a metal grate where the blood of slaughtered animals would usually drain away

The executioner can be seen brandishing a huge knife as prisoners, dressed in orange, are bundled into the slaughter house with their hands tied behind their back

The executioner can be seen brandishing a huge knife as prisoners, dressed in orange, are bundled into the slaughter house with their hands tied behind their backs.

The 12-minute video also features images of past ISIS executions as well as recent terror atrocities.

Photos of the Eiffel Tower in Paris are used along with images from the aftermath of the Nice terror attack in July in which an ISIS inspired fanatic driving a truck murdered scores of people celebrating Bastille Day.

The 12-minute video also features images of past ISIS executions as well as recent terror atrocities

The video was released as Muslims around the world celebrated Eid al-Adha

The video was released as Muslims around the world celebrated Eid al-Adha.

The holy festival, also known as the 'feast of sacrifice' commemorates the willingness of the Prophet Ibrahim - also known as Abraham to Christians and Jews - to sacrifice his son before God stayed his hand.