A fisherman caused houses and businesses to be evacuated and sparked four hours of travel chaos - after pulling an old world war two bomb from a canal.Magnet fisherman Nick Lee, 49, sparked mass panic and a major police operation when he pulled the 18lb shell from the Rochdale Canal in Newton Heath, Manchester.The father-of-two cast his rope in the water at 7am on Friday morning hoping for a relaxing morning taking part in his favourite hobby.But less than an hour later, he was on the phone to the police informing them of his discovery.