A former aide to lawmaker Michihiko Kano under arrest for his suspected involvement in a corruption case in Ibaraki Prefecture allegedly offered 10 million yen to a major supporter of Tokushima Gov. Toshio Endo last year, sources close to the case said Monday.
The money was intended to finance Endo's campaign for governor last September, but the supporter refused.
Endo went on to win a third straight term.