We have the power to destroy your company and we will unless paid,” he added. The man also asked the supermarket to confirm it will pay, inserting a specified announcement into a newspaper. Police identified the man quickly based on the DNA attached to the stamp on the envelope, because he was in their data bank after being convicted of an unconnected offence in 2012. He was arrested before the deadline of the threat and after he denied he had actually poisoned any food, saying it had just been only a threat. He also specified no other people was involved but fact is he had purchased a large amount of potassium cyanide with serious intentions. Finally he accepted a heavy prison sentence.