Japan's newly-appointed Finance Minister Satsuki Katayama arrives at the prime minister's official residence in Tokyo, Japan October 21, 2025. REUTERS/Kim Kyung-Hoon

TOKYO (Reuters) -Japanese Finance Minister Satsuki Katayama on Tuesday expressed concern over recent foreign exchange movements, as the yen sank to fresh nine-month lows versus the dollar.

"As we have recently been seeing one-sided, rapid moves in the foreign exchange market, we have been alarmed," Katayama said at a regular news conference.

"The government will thoroughly monitor for excessive fluctuations and disorderly movements in forex market, with a high sense of urgency," she said.

(Reporting by Makiko Yamazaki; Editing by Jacqueline Wong)