"No" supporters hold a banner during celebrations in Athens, Greece, July 5, 2015. Reuters/Dimitris Michalakis

The final tally is in and an overwhelming majority of Greeks voted against the austerity demands of international creditors, a landslide result for the leftist government. With 92 percent of the vote counted, Greeks rejected the bailout terms 61 percent to 39 percent, the Interior Ministry said.

Economists have warned a "no" vote could lead to Greece exiting the eurozone. However, Greek Prime Minister Alexis Tsipras said Sunday the “no” vote is not a mandate to clash with Europe, and the country is ready to continue negotiating with a plan of reforms.

"With the difficult circumstances prevailing today you made a very brave choice," Tsipras said in a televised address to Greeks. "I'm fully aware the mandate you gave me is not one of a rupture with Europe but a mandate to strengthen our negotiating position to seek a viable solution."

The "no" vote sent the euro lower, falling 1.6 percent to $1.0963 in electronic trading before the opening of the Asian markets, Agence France-Presse reported.

Tsipras has maintained a vote against the creditors' reform proposals -- pension cuts and tax hikes -- would allow him to renegotiate with the country’s creditors in a stronger position. The result, he said, would be a new bailout deal with better terms.

Greek Prime Minister Alexis Tspiras (center), accompanied by security agents, leaves his offices in Athens, Greece July 5, 2015. Reuters/Christian Hartman

The international creditors, however, have said they are unwilling to renegotiate. If that’s true, Greece risks an exit from the eurozone. Athens defaulted on its debt payment of 1.6 billion euros ($1.8 billion) to the International Monetary Fund Tuesday, risking the country’s place in the eurozone and sparking concerns Greece may exit the 19-member currency bloc.

Eurogroup finance ministers plan to meet to discuss the outcome of the Greek referendum, said Michel Reijns, a spokesman for chairman Jeroen Dijsselbloem. The meeting is expected to take place later this week.

The EU's Jean-Claude Juncker scheduled a conference call with European Council President Donald Tusk, the ECB's Mario Draghi and Eurogroup's Jeroen Dijsselbloem Monday. France and Germany called for an emergency meeting among eurozone leaders. German Chancellor Angela Merkel and French President Francois Hollande conferred by phone and planned to meet in Paris Monday ahead of the session called by Tusk for Tuesday, Reuters reported.

After last-ditch negotiations between Athens and its European creditors broke down last weekend, Greece imposed so-called capital controls this week on fears Greek citizens would withdraw all their cash and stash it under mattresses.

The controls include daily limits on cash withdrawals and restrictions on monetary transfers and overseas credit card payments to prevent euros from flowing out of Greek banks. ATM withdrawals are limited to 60 euros ($66) a day for this period and Greeks cannot transfer money to accounts abroad.

Greece was renegotiating the terms of its $270 billion bailout program following January's election victory of the far-left Syriza Party. Before the national elections, the Syriza Party, led by Tsipras, had staged a revolt against the budget cuts and other austerity measures mandated under the bailout. The previous conservative government of Greece had agreed to those bailout terms.

Talks between Greece and its international creditors have stalled multiple times in the last four months. Greece struck a deal with the European Union in February to get 7 billion euros ($8 billion) in extra bailout funds in exchange for economic reforms. The deal specified the funds would not be released until Tsipras’ leftist government submitted reform plans that were approved by the “troika,” -- the International Monetary Fund, the European Central Bank and the European Commission.