David Cameron has appealed to former Guantanamo Bay detainee Moazzam Begg to share any information he has about the Islamic State militants behind the capture of Western hostages. Mr Begg has claimed he offered to help the Government secure the release of British hostage Alan Henning from Islamic State (ISIS) extremists but was prevented from issuing a direct appeal. He also said he believed he knew those who held the murdered aid worker and had helped secure the release of hostages from extremists in Syria in the past. Scroll down for video Pictured left, former Guantanamo Bay detainee Moazzam Begg outside high security Belmarsh prison after he walked free from jail on Wednesday, and right, Prime Minister David Cameron leaving Downing Street
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PM: Moazzam Begg should tell Government what he knows about ISIS killers
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Mr Begg has claimed he offered to help secure release of Alan Henning
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David Cameron says Begg's appeals to help situation 'fell on deaf ears'
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Former Guantanamo detainee Begg walked free from prison last week
Upon his release, the court heard that Begg was suffering from post-traumatic stress disorder from his time in @placeholder.