Greece has asked for more talks about a financial rescue plan, put together by eurozone countries and the International Monetary Fund.
The euro has fallen, again highlighting nervousness among investors about the indebtedness of some countries.
Last week, Greece agreed to a eurozone package of loans worth 30 billion euros it could use in the event of a default.
The ministry of finance says asking for talks on the deal does not mean it will draw down the money.
