Ukraine has launched drones at Moscow for the second night in a row, forcing closure of the capital’s three major airports, Russian officials said early on Wednesday. The mayor, Sergei Sobyanin, said six Ukrainian drones approached Moscow and what he claimed was debris from an intercepted drone fell over one of the key highways leading into the city. Russia’s aviation authority, Rosaviatsia, said it halted flights at airports serving Moscow including Vnukovo, Domodedovo and Zhukovsky.

Ukrainian forces attacked a power substation at the town of Rylsk in Russia’s western Kursk region, the regional governor said early on Tuesday, after Russian war bloggers reported Ukrainian forces firing missiles had smashed through the border in Kursk, crossing minefields with armoured vehicles. The Kursk governor, Alexander Khinshtein, said two people were injured in the substation attack, while two transformers were damaged and power cut.

The Russian military blog Rybar said Ukrainian units were trying to advance in Kursk near the settlements of Tyotkino and Glushkovo. The Ukrainian military said its forces had struck a Russian drone command unit near Tyotkino on Sunday. Russia said Ukrainian attacks on its border area near the Sumy region killed three people. Ukrainian prosecutors said on Monday that Russian forces had subjected two settlements in the Sumy region bordering Kursk – Bilopillya and Vorozhba – to artillery fire and guided bomb attacks, killing three residents and injuring four. Local officials ordered evacuations in part of Sumy across from the fighting in Kursk.