Ukrainian troops have stormed the Kramatorsk airfield in eastern Ukraine, with Pro-Russian protesters wounded and casualties expected during the skirmish, a report says.
Armed Ukrainian troops marched upon the Kramatorsk airport which is located between Kramatorsk and Slavyansk on Tuesday, where a firefight broke out with pro-Russian protesters who controlled the site, RIA Novosti news agency reported.
Russian sources say automatic firing could be heard from the direction of the military airfield with casualties feared during the battle.
The incident comes as Ukraine’s acting President Oleksandr Turchynov announced "an anti-terror operation" in the east of the country.
He earlier accused Russia of having "brutal plans to destabilize the southeast of his country."
Large numbers of Ukrainian troops have also been seen entering the city of Slavyansk in preparation for an imminent attack.
Russian Foreign Minister Sergei Lavrov warned the acting government in Kiev of using "criminal force" against pro-Moscow protesters in the east and the south who are seeking to separate from the country and join Russia.
Meanwhile, in a telephone conversation with United Nations Secretary General Ban Ki-moon, Russian President Vladimir Putin said he expects the UN to condemn Ukraine's approach in dealing with the unrest in the country’s east.