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Ukraine crisis: Deadly gun battle on Mariupol streets

9 May 2014 Last updated at 16:21 BST

At least 20 pro-Russian protesters have been killed in violence in the south of Ukraine, the country's Interior Minister has said.

Footage showed gun battles unfold between government troops and separatists on the streets of Mariupol.

The city's police HQ was also set on fire. Lucy Hockings and David Stern report.