The eurozone is set to release a vital installment of aid money for Greece but will leave the final decision on a second bailout for the debt-ridden country until later this summer, AP reported. The finance ministers of the 17 countries that use the euro will sign off on an ¤8.7 billion ($12.6 billion) tranche of Greece's existing bailout in a conference call Saturday evening. An extra ¤3.3 billion will come from the IMF. Without the ¤12 billion, Greece would have defaulted on its massive debts within days. The country needs tens of billions of euros in further assistance over the coming years, but ministers have delayed a second aid package until they know how much banks and other private creditors will contribute.