A helicopter has been seen opening fire in the eastern Ukrainian city of Slaviansk, the Reuters agency reports.
It comes amid claims from pro-Russian separatists that the Ukrainian military has launched an operation to re-take the area.
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.