Japan will invest more in European Financial Stability Facility (EFSF) bonds if needed, after purchasing more than two billion euros ($2.9 billion) since January, Finance Minister Yoshihiko Noda told reporters.
"We'd like to contribute to (the emergency lending facility) at the same pace if that could help stabilise the economies of the EU," Noda said.
He made the comment after the news that eurozone leaders had reached a draft deal to provide loans on easier terms to debt-ridden nations such as Greece.
Noda also said he would keep a close watch on the currency market as the yen continues to move in a "one-sided" way.
The yen stayed strong in early Tokyo trade, at 78.49 to the dollar against 78.43 in New York late Thursday.
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