A source told the news agency they had deserted their posts amid clashes between ISIS and Kurdish Peshmerga forces.
Media activist, Abdullah al-Mallah, said: "The militants were found guilty for evacuating a post at the battlefront, where clashes took place between them and the Kurdish Peshmerga forces.The Sharia Court of Mosul decided to behead them in front of hundreds of ISIS members in order to prevent others from taking such a move without the permission of their military leadership."