Japan: £70,000 found at rubbish tip Similar incidents have been reported in other parts of Japan in the past, with many people preferring to keep their cash at home instead of entrusting it to banks. Miserable interest rates at Japanese banks also play a part in the public opting to put their cash under the mattress at home. police in Hiroshima are still trying to locate the owner of Y6 million (£43,818) in cash that was found in a house that was about to be demolished. In the aftermath of last year's earthquake in north-east Japan, thousands of safes that had been in people's homes destroyed by the tsunami were handed in to police to be returned to their rightful owners.