With four hours of voting to go, Greeks are turning out in solid numbers to vote on their financial future.
Private Mega TV channel says turnout has been markedly high, now standing at 35 percent, and lines have been seen at polling stations in Athens. Turnout must be above 40 percent for the referendum to be valid.
High turnouts are normal in Greece because voting is mandatory — although that law has not been enforced in recent years.
In the country's first referendum since 1974, Greeces 9.8 million voters are choosing Sunday whether to accept demands by international creditors for more austerity measures in return for bailout loans.