Greece has again threatened to default on loan repayments due to the International Monetary Fund, saying it will be unable to meet pension and wage bills in June and also reimburse €1.6bn owed to the IMF without a bailout deal with creditors.

“The money won’t be given?.?.?.?It isn’t there to be given,” Nikos Voutsis, the interior minister, told the Greek television station Mega. He claimed the EU and IMF were pressing Greece to make unacceptable concessions in the bailout talks in return for unlocking €7.2bn of aid frozen since last year.

The warning by Mr Voutsis, one of Prime Minister Alexis Tsipras’s oldest political allies, comes just two weeks after Mr Tsipras made a similar threat in writing to Christine Lagarde, the IMF managing director.