At least eight people were killed in an attack on a residential area in the eastern Donetsk region of Ukraine.
Ukraine's interior ministry said another 13 people were wounded in the Russian shelling of the town of Lyman, reports BBC.
The strike caused fires in a house, a printing shop and three cars which have now been put out by rescuers.
It comes as the country marks the 500th day of the invasion.
Ukraine's counter-offensive, which began last month, continues to grind on in the eastern Donetsk and south-eastern Zaporizhzhia regions.
Its advances have been slow, as Russia continues its missile and drone attacks.
Lyman is a key railway hub in the Donetsk, and was initially captured by Russia but then retaken by Ukraine's army in October.
Russia had been "concentrating quite powerful forces" there, the spokesman of Ukraine's eastern group of forces, Serhiy Cherevatyy, told Ukrainian television on Friday.
Bd-pratidin English/Golam Rosul