ISIS gunmen used knives to torture their mortally wounded victims by slitting their stomachs as they lay on the floor, it has been claimed.

An eyewitness who hid in a cellar for three hours as the armed murderers rampaged through the packed Bataclan Theatre in Paris said she knew people were being tortured because she could hear their screams.

Mariesha Payne, from Perthshire, told the Daily Mail: “We knew people were being tortured in the theatre because we heard people screaming, but they were not being shot and these were singular screams.

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