The European Union said it would not recognise the result of a referendum on self-rule held by pro-Moscow rebels in east Ukraine on Sunday.
A spokeswoman for EU foreign policy chief Catherine told Reuters: "The so-called referenda in ... parts of Luhansk and Donetsk regions were illegal and we do not recognise the outcome.
"Those who organised the referenda have no democratic legitimacy."
The spokeswoman said holding the referendum ran counter to the objectives of an agreement reached by Ukraine, Russia, the EU and the United States last month aimed at defusing the Ukraine crisis.
European Union foreign ministers added 13 people to their visa ban and asset freeze list over Ukraine's crisis.
Well that’s the voting over, and no surprises so far. A ‘Yes’ vote claimed to be 89% in Donetsk, and suddenly Ukraine is no more.
Nearly 90 percent of voters in eastern Ukrainian region voted for self-rule, the head of the separatist election commission said.