Russian missiles hit a 5-story building in the city of Chasiv Yar in the Donetsk region, Ukraine's Donetsk Regional Military Administration Head Pavlo Kyrylenko revealed via Telegram on Sunday.

With at least three dozen people trapped under the rubble, the rescue operation is ongoing, but six dead and five injured have been extricated, Kyrylenko said.

There has been no response as yet from the Russian side.