Japan is known for having a high life expectancy: according to 2008 public data, the world’s life expectancy is 69, the US’s is 78, and Japan’s is 83. With this higher life expectancy, Japan has a large number of centenarians, people who are over 100 years old. But there is a problem: the Japanese government has had problems keeping track of this population group.

More than 230,000 Japanese citizens listed in government records as at least 100 years old can’t be found and may have died long ago, according to a government survey released Friday.

In August, the Justice Ministry ordered a review of records that found about 77,000 people who would be at least 120, and 884 people who would be 150 or older. The head count followed a flurry of reports about how elderly people are falling through the cracks in Japan as its population ages rapidly and family ties weaken.

In all, the survey of family registration records nationwide found that 234,354 centenarians were still listed as alive, but their whereabouts were unknown, the ministry said.

While this could be chalked up as simply a bureaucratic problem, the news story suggests these findings line up with concerns about how the elderly are treated in Japan. This then could be a larger issue that concerns social and family relationships and the fabric of Japanese society.