ISIS executes five suspected spies and also threaten David Cameron
A suspected British boy dressed in military fatigues and a black bandanna bearing the white flag of ISIS, he pointed to the distance and declared: 'We will kill kuffar [non believers] over there.'
In the ten minute long propaganda video, five shackled men, dressed in orange jumpsuits, were filmed 'confessing' to spying for British security services.
One of the masked executioners, who spoke in a clear British accent, threatened David Cameron before executing the unarmed men.
In the video, the five captives were forced to confess to their crimes before they were paraded to a remote desert location and ordered to kneel.
The English speaking jihadi then yelled 'Allahu Akbar' before he and his fellow fanatics shot the men in the back of their heads from point blank range.
Suspected British boy threatens UK in a sickening execution video
The video ended with a trailer for another execution, in which a young, dark skinned boy threatened Britain, raising fears the child may have executed someone on camera.
Before killing the prisoners in cold blood, the British jihadi said: 'This is a message to David Cameron, slave of the White House, mule of the Jews.'
He called the Prime Minister an 'imbecile' and claimed 'your children will pay' for British airstrikes on ISIS targets in Syria.
He added: 'How strange it is that we find ourselves today hearing an insignificant leader like you challenge the might of the Islamic State.
'How strange it is that the leader of a small island threatens us with a handful of planes.
The captives dressed in orange jumpsuits
'One would have thought you would have learned the lessons of your pathetic master in Washington and his failed campaign against Islamic State.
'It seems that you, just like your predecessors [Tony] Blair and [Gordon] Brown, are just as arrogant and foolish.
'David, only a fool would wage war against a land where the law of Allah reigns supreme and where the people live under the justice and security of the Sharia.
'As for those of you who wish to continue fighting under the banner of Cameron on the minimum wage, we say to you, to ask yourself, do you really think your government will care about you when you come into our hands?
'Or will they abandon you, as they have abandoned these spies, and those who came before them.'
The executioner, who waves his handgun at the camera before killing one of the prisoners in cold blood.