At least two people were killed on Sunday in Ukrainian strikes on the partly Russian-occupied Donetsk region, Russian state media said, while Ukrainian officials said Russian strikes wounded at least five people.
Along the front line in the east, Russia said it had taken control of two villages - one in the Kharkiv region and one in the Luhansk region.
Ukrainian shelling of Russian-held areas of the Donetsk region killed two people in the village of Horlivka, Russian state news agency RIA Novosti said.
Three people were wounded by Russian drone strikes in southern Ukraine's partly occupied Kherson region, local officials said on Sunday morning.
In the country's northeast, officials in the Kharkiv region said two people were wounded when a village was hit by Russian shells.
Overnight into Sunday, Ukraine's air defences intercepted 35 of the 39 drones launched by Russia, according to air force commander Mykola Oleschuk.
In addition, Russia launched three ballistic missiles and two guided air missiles, which did not reach their targets, he said.
Russia's Ministry of Defence said on Sunday that its troops had taken control of two villages: Pishchane Nizhne in the Kharkiv region and Andriivka, sometimes referred to as Rozivka, in the Luhansk region.
Ukraine did not immediately comment.
Officials in the northern Sumy region said that Russia launched a missile strike on "critical infrastructure facilities" in the city of Shostka.
City mayor Mykola Noha specified that "two heating facilities" had been destroyed and called on residents to use electricity sparingly and stock up on water.
With few changes reported along the 1000km front line, where a recent push by the Kremlin's forces in eastern and northeastern Ukraine has made only incremental gains, both sides in the war have taken aim at infrastructure targets - seeking to curb each other's ability to fight in a war that is now in its third year.
Russian air defence systems overnight destroyed eight drones over the country's Belgorod region and over the Black Sea, the Russian Ministry of Defence said.
Russian air defence also shot down two long-range ballistic ATACMS missiles in the sky over the Kherson region heading for Russia-annexed Crimea, Russia-installed Kherson governor Vladimir Saldo said.
Nine people were wounded over the previous day in shelling in the town of Shebekino in Russia's Belgorod region, bordering Ukraine, governor Vyacheslav Gladkov said on Sunday morning.
The Ukrainian military was observing Russian troop reinforcements in northeastern Ukraine, with new units stationed in Hlubokoye in the Kharkiv region, Nazar Voloshin, spokesman of the Ukrainian troops defending the area, reported on Sunday.
Among others, a strike force from the Russian Pacific Fleet's naval infantry and parts of a rifle division have been brought into the region, Voloshin said.
The Russian military had begun a larger operation aimed at Kharkiv at the beginning of May.
with DPA
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