Kyiv was rocked by several explosions early on Sunday, the mayor of the Ukrainian capital said, a day after officials said troops had recaptured a swath of the battlefield city of Sievierodonetsk in a counter-offensive against Russia.

Several explosions in Darnytskyi and Dniprovskyi districts of the capital, Kyiv Mayor Vitali Klitschko wrote on the Telegram messaging app. 

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