Prosecutors on Friday sought a three-year prison term for former Upper House lawmaker Takao Koyama, who is accused of accepting 31.6 million yen in bribes from the mutual-aid foundation KSD between 1996 and 2000.

During the trial session at the Tokyo District Court, prosecutors also demanded that Koyama, 58, pay a fine of 31.6 million yen.

One prosecutor said Koyama had committed a serious crime in which he "virtually sold off his authority as a House of Councilors member and duties as the parliamentary vice labor minister."