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Damon Smith mum: 'Internet taught my son how to make a bomb'
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Tube bomb plotter's mother blames YouTube for 'poisoning' her son
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Student guilty of building bomb and leaving it on busy Tube train
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Grinning student tells police he left bomb on Tube 'for a prank'
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Student accused of Tube bomb plot ‘refuses to give evidence in trial’
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'Isis inspired Tube bomb plotter built shrapnel device with £2 clock'
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