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Islamic State militants kill five men it says 'spied for UK' Islamic State video 'shows killing of five men it says spied for UK'
(about 1 hour later)
A video has been released online by so-called Islamic State, which it says shows the killing of five men who it claimed had been spying for the UK. Islamic State militants have released a video, featuring a man and young boy speaking with British accents, purportedly showing the killing of five men who it says were spying for the UK.
A masked militant speaking with a British accent appears in the 10-minute film, threatening attacks in the UK. In the 10-minute film, the man threatens attacks in the UK and says this is a message for David Cameron.
He says this is a message for Prime Minister David Cameron. A boy later appears in the video, which has not been independently verified, talking about killing "unbelievers".
A young boy is also seen speaking in English and talking about killing unbelievers. The propaganda video has not been independently verified. The UK Foreign Office said it was examining the video's content.
In the video, some of the men say that they are from Raqqa in Syria and another says he is from Benghazi, Libya, but none say they are from the UK. IS has repeatedly used children in its propaganda videos.
BBC World Service Middle East editor Alan Johnston said the video shows five men making what is claimed to be their confessions but they appear to be "speaking under the most extraordinary duress". 'Extraordinary duress'
"They may be entirely innocent," he added. In the new video, the masked jihadi militant, who is holding a gun, mocks Mr Cameron for daring to "challenge the might" of the extremist group before he makes a threat to British people to "invade your land".
One says he had been asked to provide information about the location of IS militants, possibly so that they could be targeted by air strikes, our correspondent said. The five men, wearing jumpsuits, are seen purportedly being shot in the back of the head in a desert location, after making what is claimed to be their confessions.
But BBC World Service Middle East editor Alan Johnston says they appear to be "speaking under the most extraordinary duress" and "may be entirely innocent".
One of the men says he had been asked to provide information about the location of IS militants, including two Britons, apparently to help target them with air strikes.
Some of the five men say that they are from Raqqa in Syria while another says he is from Benghazi, Libya, but none that they are from the UK.
After the apparent killings, the young boy, who seems to be aged around six or seven years old, is seen pointing into the distance, wearing military-style clothing.
Analysis
By Gordon Corera, BBC security correspondent
It is less than two months since British IS propagandist Mohammed Emwazi, the man known as Jihadi John, was killed by a drone strike in Syria.
This latest video by IS seems to show another man trying to take up his mantle.
The identity of the masked man is so far unknown but authorities will be trying to identify him and confirm if he is British.
Emwazi was killed after intelligence - most likely from informers - located him in a vehicle in Raqqa, Syria.
The fact that this latest video shows the killing of alleged spies indicates the extent to which IS is trying to track down those who might be providing information.
Children also regularly feature in IS propaganda videos and the brief appearance of a child - apparently with a British accent - at the end of the video will also most likely be of interest to the authorities.
Alan Johnston says the release of the video comes in the aftermath of a "major military setback for IS" after it recently lost control of much of the Iraqi city of Ramadi.
He adds: "It's possible this is aimed at distracting attention from that defeat - an effort to shock watching Westerners and shift their focus."
Following the death of Mohammed Emwazi, the Briton who became known as Jihadi John, this new video shows "something of a replacement" for him, says our correspondent.
"That masked militant becomes the new masked face of the Islamic State, at least for British viewers."