Eurozone leaders gathering for an emergency summit Tuesday should discuss humanitarian aid for the debt-mired country, German Economy Minister Sigmar Gabriel said.

"We must now cover their needs very quickly, the people there need help and we should not refuse it just because we're unhappy with the result of the referendum (Sunday on creditors' bailout terms)," Gabriel, who is also Germany's vice chancellor, told reporters Monday.

"I hope this can happen quickly. I assume it will also be discussed tomorrow in Brussels" at the eurozone summit, he said.