French President Francois Hollande said on Wednesday that a deal between Greece and its creditors should be reached before the referendum on Sunday. He added that the failure to reach a deal before the referendum could lead to "a period of turmoil and the unknown".

"It is our duty to keep Greece in the euro zone. That depends on Greece ... But it also depends on us. As a European, I don't want the euro zone to come apart, I am not into intransigent comments, into brutal rifts," Hollande said.