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Things appear to be moving very fast in the city of Rostov-on-Don, where footage on local Telegram channels appear to show Wagner forces surrounding a government building.

The footage - which has not been verified by the BBC - shows armed men in uniform walking around the local interior ministry's building's perimeter, as armoured vehicles surround it, including two tanks with their guns trained on it.

Meanwhile the local governor Vasily Golubev urged residents to avoid the centre of Rostov-on-Don.

"In connection with the current situation, I ask you to refrain from traveling to the city center and, if possible, not to leave your homes," he wrote on Telegram