Greece today raised €1.3 billion in three-month treasury bills at higher interest in an ongoing scramble for cash. 

The country's debt agency said it had accepted the entire amount offered by creditors, paying 2.7% compared with 2.5% in an equivalent sale a month earlier. 

Greece needs to find some €6 billion this month to repay maturing treasury bills and loans from the International Monetary Fund. 

The new radical left government elected in January on an anti-austerity platform has received no money from Greece's outstanding EU-IMF bailout because it is still in negotiations with the country's international creditors on a new loan deal.

Meanwhile, Greece is set to tap into more than half a billion euros of funds sitting in the country's bank rescue fund as it scrambles to find money this month amid a cash crunch, banking and government sources have told Reuters. 

Shut out of debt markets and with aid from lenders on hold, Athens risks running out of cash in the coming weeks after a steep fall in state revenues. 

To help ease the looming crisis, the government plans to take €555m sitting at the Hellenic Financial Stability Fund (HFSF) - the bank rescue vehicle that was used in 2012 to recapitalise its main lenders. 

Greece's four top banks - National, Piraeus, Eurobank and Piraeus - handed over this money in commissions following their recapitalisation. 

"This is money for which there is no other claim, it is available for the government," a senior banker with direct knowledge of the matter told Reuters. 

"The HFSF has discussed this with the European Stability Mechanism over the weekend and there is no issue," the banker added, referring to the euro zone rescue fund. He said it was up to the government to decide when it withdraws the cash. 

The HFSF, funded from the country's EU/IMF bailout with €50 billion, recapitalised lenders with European Financial Stability Facility (EFSF) bonds, which banks can still use as collateral for direct funding from the European Central Bank. 

Greece has been also looking to tap into the cash reserves of pension funds and public sector entities through repo transactions to cover part of its funding needs in March. 

In such transactions, pension funds and other state entities sitting on cash lend the money to the country's debt agency through a short-term repurchase agreement for up to 15 days, debt agency officials have told Reuters. 

Greece is due to resume talks with its creditors in Brussels today, with the aim of unlocking desperately needed funding for the heavily indebted state.