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.
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.
ISIS Last year stoned to death a Syrian girl with her father’s satisfaction. This video went viral in social media.
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