Tokyo criticized Seoul on Tuesday after South Korea's foreign minister raised at a U.N. committee concerns about a 2015 bilateral deal on "comfort women" who were forced to work in Japan's wartime military brothels.

"We cannot accept the minister's comments," Chief Cabinet Secretary Yoshihide Suga said at a news conference in Tokyo.

Japan maintains that the December 2015 deal remains valid even after a change of government in South Korea, and that neither country should criticize the other on the comfort women issue in the international arena.