Germany has responded coldly to Greece's request for a six-month extension to its rescue loan agreement without the associated spending cuts.

German Finance Ministry spokesman Martin Jaeger said in a statement Thursday that a letter from the new Greek government "is not a substantial proposal for a solution."

He says that it amounts to a request "for bridge financing without fulfilling the demands of the (bailout) program."

Germany, a key creditor, has insisted that aid for struggling countries must come with strings attached.

Jaeger says the letter from Greece doesn't correspond to criteria agreed Monday by the eurogroup, the group of 19 countries that uses the euro.