Moscow reports Ukrainian strikes on oil refineries and border towns

Russia said Ukrainian artillery hit a Russian town for a third time this week and drones struck two oil refineries in an uptick in attacks on Russian territory as Ukraine prepares a Western-backed push to end Russia's invasion.

Inside Ukraine, Russian-installed officials said five people had been killed in Ukrainian army shelling of a Russian-occupied village in the east, where Russia has fought months of bloody and inconclusive battles to try to seize more territory.

There was no immediate comment from Ukraine on the Russian reports, in a week when the two countries accused each other of spreading terror in their capitals with air strikes.

Thousands of civilians have been killed in Ukraine and towns and cities laid to waste since Moscow's forces invaded 15 months ago, but Tuesday marked only the second time Moscow had come under direct fire - from a flurry of drones - although oil and military facilities elsewhere in Russia have been hit.

In the Russian town of Shebekino, two of four wounded people were hospitalised and shells damaged an apartment building, four homes and a school as well as power lines, regional governor Vyacheslav Gladkov said.