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Bishkek (AKIpress) - Two people have been killed in clashes between pro-Ukrainian and pro-Russian activists in Ukraine's eastern city of Kharkiv, officials say, reported BBC.
Five people were injured overnight, as gunshots were fired. Rival groups blamed each other for the violence.
Earlier, Russia and the US failed to agree on how to resolve the crisis in Ukraine's Crimea region, ahead of a secession referendum there.
Russia vowed to respect Sunday's vote - but the US said it was illegitimate.
Moscow has been tightening its military grip on Crimea - the southern autonomous republic in Ukraine - where voters are to decide on whether to re-join Russia or stay with Kiev.