Prime Minister Fumio Kishida is considering replacing internal affairs minister Minoru Terada, mired in a funding-related scandal, and is set to make a final decision as early as Sunday, government sources said Saturday.

Kishida told reporters in Bangkok he will decide on a Cabinet reshuffle at an appropriate time amid growing calls for him to replace the scandal-hit minister.

"In order to tackle difficult challenges, I, as prime minister, will decide (on a reshuffle) when appropriate," Kishida told a news conference in Bangkok as he wrapped up his attendance at the two-day Asia-Pacific Economic Cooperation forum summit.