In 2010, police in Tokyo were investigating a missing person and discovered that she had been dead since 2001. The dead woman's 64-year-old son had been keeping the remains of his mother in his backpack for that time. In lieu of a funeral, which he says he couldn't afford, her son laid out her body, washed it in the tub, broke up the bones and stuffed them into a backpack. The man is under investigation for criminal damage to a human body and receiving an illegal pension.
The woman in question was considered still alive, and her son had collected 150,000 yen that had been awarded to her to celebrate her longevity. Authorities in Japan have been investigating so-called centenarians (people living over 100 years) to make sure that they are in fact still alive, and have shockingly discovered that many of them aren't.
You can read more about this weird story in this article.