Russian strikes killed at least four people and wounded more than 30 others across Ukraine overnight, regional officials said on Monday.

Two people died in the Sumy region in the east and one in the Odesa region in the south, Ukraine’s state emergency services said in a post on Telegram.

One man was killed in the southern Kherson region, according to the regional governor.

More than 30 people have also been wounded, most of them in the eastern regions of Kharkiv and Dnipropetrovsk, officials said.

Russian drones also hit the capital Kyiv in strikes that damaged buildings but did not result in any fatalities, the city’s mayor wrote on Telegram.

In Russia, the defense ministry said that it had shot down 91 Ukrainian drones overnight, including eight in the Moscow region, with the majority of the rest in regions bordering Ukraine.

On Friday, Russia carried out its largest drone and missile barrage on Ukraine since it launched its invasion in February 2022, sending 530 drones and around a dozen missiles on Kyiv in an attack that killed at least two people.

Russia said Sunday it had captured another two settlements in east Ukraine, one in the Donetsk region and one in the Kharkiv region.

Ukraine did not immediately comment on Russia’s claims.

Moscow has been grinding forward on the front line for over a year, pressing its advantage against overstretched and outmanned Ukrainian troops.

In two separate Telegram posts, the Russian defense ministry said its army units had “liberated” the settlements of Poddubnoye and Sobolevka, using Russian spellings for the localities.

The Russian military accelerated its advances for a third consecutive month in June.

Its territorial gains for that month were the biggest since November last year.