Russian forces have taken control of a settlement named Vesele in Ukraine's eastern Donetsk region, Russia's defence ministry says.
The ministry provided no details about the settlement.
A village with the same name, populated by about 100 people, is located 20km northeast of the Russian-controlled city of Bakhmut in an area of intense fighting.
The ministry said only that the village had been taken by what it called the active efforts of units which are part of Russia's southern military group.
Reuters was unable to verify the battlefield assertion.
There was initially no reaction from Ukraine.
Ukraine has been defending itself against a Russian invasion with massive foreign support for nearly two years.
The fighting is still concentrated around the east and south.
Ukrainian forces launched a counteroffensive earlier this year but progress has been limited.
Ukraine has vowed to retake all the land occupied by Russia including the Crimean Peninsula, which Russia seized and annexed in 2014.
Ukraine hit targets in Russia's St Petersburg overnight using a domestic-produced drone that flew 1250km, a Ukrainian government minister was quoted as saying by Interfax-Ukraine news agency on Thursday.
A Ukrainian military source told Reuters earlier that an oil terminal in Russia's second city, located 850km from the nearest section of the Ukrainian border, was targeted as part of a "new stage of work in this region".
"Last night we hit the target, and this thing flew exactly 1250 kilometres last night," Oleksandr Kamyshin, the minister of strategic industries who oversees weapons production, was quoted as saying in Davos.
Reuters could not independently verify the statements.
A Russian-appointed official in occupied southeastern Ukraine said earlier that Ukraine had tried and failed to target a Russian Baltic Sea oil terminal with a drone overnight.
Ukraine has been trying to develop and produce attack drones with a longer range, to narrow the gap in strike capabilities with Russia, which regularly conducts long-range aerial bombardments of Ukraine with missiles and drones.
with DPA
