Polls have closed in Greece referendum, which will determine the cash-strapped country’s future in the eurozone, with opinion polls showing a narrow win for the 'No' vote.

According to Greece Interior Ministry partial vote count shows 'No’ vote is in lead by accounting for 61 percent of early votes counted.

Earlier in the day, a poll by the Star television channel, carried out during voting on Sunday and the day before, showed that between 49 and 54 percent of the participants favored 'No' while 46 to 51 percent supported a 'Yes' vote.

Mega channel poll also suggested a 49.5-53.5 percent 'No' vote against 46.5-50.5 percent for 'Yes'.

Counting is now underway in Greece and the results of the referendum are expected to be announced by 2100 GMT Sunday.

Greeks had to choose whether to accept another tough austerity package proposed by the country’s international lenders – the European Commission, the European Central Bank (ECB) and the International Monetary Fund (IMF) – in return for fresh bailout loans.

Prime Minister Alexis Tsipras had called for a ‘No’ vote in the plebiscite, rejecting speculations that such a move would endanger Greece’s place in the eurozone or in the EU.

However, opponents have warned that a ‘No’ vote would see Greece ejected from the single currency bloc.

Though a so-called Grexit is not certain, Greece’s potential exit from the eurozone could shake the foundation of the entire single-currency bloc as it could set an example for other cash-strapped members.

French President Francois Hollande, meanwhile, is set to meet German Chancellor Angela Merkel in Paris on Monday night to "evaluate the consequences of the referendum in Greece,” according to a statement by the French presidency.

The leftist government of Tsipras believes a 'No' vote will put pressure on the international creditors to provide Athens with a better, more economically viable deal.

Greece received two bailout packages in 2010 and 2012 worth a total of €240 billion ($272 billion) from its creditors following its 2009 economic crisis and, in return, accepted to implement harsh austerity measures.

MR/HMV/SS