Fighters from a Syrian insurgent group appear to have killed more than a dozen Islamic State captives with gunshots to the head, according to a video posted online on Wednesday which evoked a similar style to the jihadist group's own footage.
The insurgents from a group known as Islam Army are shown wearing orange jumpsuits and leading a group of alleged Islamic State fighters dressed in black along a road lined by trees. The men are hobbling and bound together with balls and chains. They are made to kneel and then shot dead.