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