Masato Kanda, vice-minister of finance for international affairs at Japan's Ministry of Finance, during a press conference after the Group of 20 (G-20) finance ministers and central bank governors meeting.
"Looking at currencies, the dollar/yen pair has gone through big fluctuations of 4% over only the past two weeks," Kanda told reporters.
Kanda described the recent yen moves as "speculative."
He said he wouldn't rule out any measures but stands ready to respond appropriately to the currency's move.
He added he has been closely watching currency moves with a sense of urgency, even when he was travelling overseas over the weekend.
Persons:
Masato Kanda, Kanda
Organizations:
Japan's Ministry of Finance