Riot police deployed near protest strongholds in Ukrainian capital Kiev

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Dozens of riot police in full gear have moved into the center of the Ukrainan capital where opposition activists have been occupying a city administration building and a central square.

President Viktor Yanukovych has faced weeks of protests after shelving a treaty with the European Union last month to focus on ties with Moscow. A rally on Sunday drew hundreds of thousands of protesters calling for Yanukovych's ouster.

The government has been demanding that the protests disperse and threatened harsh measures.