What is their crime? Stitching a cover for a suitcase? They would have done it as they do it for any customer without knowing that there would be bombs inthe suitcase later. Furhter regarding sale invoices ? isn't it a joke to ask for documents for sales from small time shops? Perhaps, this may only for eye wash. In the game of chess, it is the innocent and non consequential pawns who can never turn back where as all others can turn and vanish. It has happened here.