Prosecutors on Sunday arrested a former treasurer of the largest faction in the Liberal Democratic Party over a political donation scandal involving the Japan Dental Association.
The faction, known as Heisei Kenkyukai (Heisei Study Group), had been headed by former Prime Minister Ryutaro Hashimoto until last month, when the scandal forced him to quit.
Toshiyuki Takigawa, 55, allegedly violated the Political Funds Control Law by failing to promptly declare 100 million yen in political donations that Hashimoto received from the dentist association in July 2001.