A Finance Ministry official has said the government is ready to sell yen again following last week's move if it sees speculative trades driving the currency higher.
Further intervention would "maintain the effect and warn those who make unusual moves" in the currency market, Vice Finance Minister Fumihiko Igarashi said Sunday on an NHK television program.
Japan sold yen in the foreign-exchange market last week for the second time this year to keep the economy on its recovery track from the March earthquake and tsunami catastrophe.