Drones and artillery have killed civilians on both sides of the Russia-Ukraine border, local officials say.
In the Russian border region of Bryansk, a Ukrainian drone strike killed two people in their car in a village near the border, the region's acting Governor Yegor Kovalchuk said on Telegram.
Russia's defence ministry, quoted by Russian news agencies, said 124 Ukrainian drones had been downed over Russian regions over a period extending from 8am to 8pm.
Moscow mayor Sergei Sobyanin issued a long series of statements about Ukrainian drones heading for the capital being intercepted.
"Experts are currently examining the wreckage," news agencies quoted him as saying.
An informal tally kept by Russian news agencies put the number at 21 during the day.
Local officials in Russia's Rostov region said a Ukraine drone strike hit a museum dedicated to preserving the memory of World War II battles, injuring 12 people.
"A drone struck the premises of the Sambek Heights museum," Rostov regional governor Yuri Sliusar wrote on social media.
The Sambek Heights military history museum, located near the village of Sambek, is the largest memorial complex in Russia's Rostov region dedicated to Soviet soldiers who fought in the area during World War II.
Earlier, Ukraine's security service SBU reported a drone strike on an oil pumping station that it described as critical to fuel supplies for the Russian capital.
A technical building at the station in Vtorovo, near the regional capital Vladimir to the east of Moscow, had been hit, the SBU said.
It was the second successful attack on the facility within a month, it added.
In Ukraine, the governor of the southeastern Dnipropetrovsk Region, Oleksandr Ganzha, said a combined total of more than 40 drone strikes and artillery fire had killed one person and injured one near Nikopol.
The town, lying on the opposite bank of the Dnipro River from the Russian-held Zaporizhzhia nuclear power plant, is a frequent Russian target.
with DPA and EFE
