article_snippet: Shocking photographs showing the bloody beheading of four alleged spies in Iraq have been released by Islamic State.
article_snippet: The images, given the disturbing title 'Harvesting of Spies', were taken in the Iraqi province of Salahuddin and published on social media.
article_snippet: The images of the execution were taken in the Iraqi province of Salahuddin and published on social media .
article_snippet: The bearded official steps back and at the man command, the four prisoners are beheaded on the tarmac road.
article_snippet: The final two photos - too graphic to publish - show the severed heads of the victims.
article_snippet: The graphic footage, filmed in an unknown location in the Middle East, ultimately shows the deceased captives resting perfectly still in a shallow pool of blood.
article_snippet: It was the second video of an ISIS execution to surface Last week following the brutal mass murder of eight 'informers'.
highlights_snippet: Photographs of the execution of four alleged spies in Iraq released by ISIS .
  
highlights_snippet: The images, published on social media, show the men being decapitated .
  
highlights_snippet: Follows release of videos of execution of four alleged spies in Iraq released by ISIS and 'informers' last week .