Dateline: East London. Shoreditch, to be precise.
Scores of buildings were evacuated, streets were roped off, and the local explosive ordinance disposal chaps were called into action after water department crews working nearby found a suspicious object. It was the Holy Hand Grenade of Antioch, famously used to slay a killer rabbit in the 1975 film Monty Python and the Holy Grail.
The public was never in danger, save a healthy measure of overreaction.