Respect your elders

Sogen Kato was believed to be the oldest man in Tokyo up until 2010 when officials finally entered his apartment and realized that he had died at the age of 79 in 1978. His death had been kept a secret by his family who were collecting his pension. This lead to a huge search for all people over 100 years, and it turned out that Japan couldn't document the whereabouts of 234,354 supposed centenarians.