The event took place near the Syria Turkey border.

[…]  “Through binoculars the soldiers could see that the crowd were terrified and many were in tears.”
A man and a young boy were dragged out in front of the crowd and were made to kneel down.
“They were both wearing blindfolds and looked terrified.
“A tall bearded man emerged and drew a long knife.
“He began addressing the crowd and slapping the father and his son around the head and kicking them on to the floor.
“Standing either side of the executioner were two other Isis fighters, both armed with AK47s.”
The SAS marksman, using a .50 calibre sniper rifle fitted with a silencer, killed the executioner just in time.
The source added: “The ISIS thug who was about to decapitate the father was shot in the head and collapsed.
“Everyone just stared in confusion. The sniper then dispatched the two henchmen with single shots – three kills with three bullets.
“Someone from the crowd then ran over and untied the father and son’s hands and took their blindfolds off.
“They just stared at the bodies and then ran. They were last seen heading towards the Turkish border in a pick-up truck.
“It was a good day’s work.”
The SAS team was later told the village held a party to celebrate the deaths of the ISIS fighters and it is understood terrorists have since refused to enter the town.  (read more)