Prior to his death, he faced questions over high utility expenses in a rent-free office – he had claimed more than 28 million
yen ($236,600, £118,300). Matsuoka had previously apologized for failing to declare political donations. He reported over 5 million yen ($48,000
USD) for utility expenses in 2005. This expense was questioned by the press, since Matsuoka had a very small office. However, Matsuoka said that it had paid for purified water, explaining that people rarely drink tap water. On 28 May 2007, hours before facing questioning in the
Diet (parliament), he hanged himself in his Tokyo apartment and died in
Keio University hospital in Tokyo.
Norihiko Akagi was appointed his successor on 1 June but served for only two months. The former governor of Tokyo,
Shintaro Ishihara, described him as a "true samurai" for preserving his honour. Ishihara was also the scriptwriter for the film
I Go To Die For You, which glorifies the memory and bravery of the
kamikaze pilots in
WWII. == References ==