These sickening pictures claim to show four married men being stoned to death by ISIS after being accused of adultery.

The images show blindfolded prisoners praying on the floor next to a pile of rocks before they are executed under the terror group's warped interpretation of sharia law.

They are surrounded by a huge crowd including children who have gathered for the chilling spectacle, believed to be somewhere near the Tigris river in Iraq.

Final prayers: One of the ISIS prisoners sits on the floor next to a pile of rocks before he is brutally stoned to death after being accused of committing adultery in Iraq

Militants hurl the rocks at the prisoner, causing to die a slow and painful death until his skull is crushed

A summary for the photographs, which were uploaded online, reads: 'Implementing the limit of fornication on four married men.'

In another image several militants are seen hurling them at the prisoner, although the victim is not seen in the shot.

As often is the case with stonings, the prisoners most likely suffered unbearable agony until their skulls finally ended up being crushed.

Dozens of onlookers gather for the chilling spectacle, believed to be somewhere near the Tigris river in Iraq

Under Islamic sharia law, married men or women can be stoned to death for having sex outside wedlock, while those who are unmarried face being lashed.

Stoning as a method of execution has frequently been been reported in areas controlled by Islamist groups across the Middle-East.

They include ISIS-controlled areas in Syria and Iraq as well as Taliban territory in Afghanistan.