Greek Finance Minister Yanis Varoufakis said on Saturday Greece was still fighting to reach a bailout deal with its EU-IMF creditors, despite a flat refusal by its eurozone partners to extend its rescue programme beyond June 30.

"In this crucial moment, we are still fighting for a deal up to the last moment. I do not want to speculate on failure," Varoufakis told reporters after a meeting with his eurozone counterparts.

If a deal is reached, Varoufakis said his anti-austerity government would "urge the Greek people to vote yes" on the bailout in a July 5 referendum called by Athens late Friday.