Russia launched a drone strike on the Ukrainian capital Kyiv early on Wednesday, wounding at least six people and damaging buildings in two districts, city officials said. Explosions boomed across the morning sky as Ukraine's air force warned of drones approaching the city and Mayor Vitali Klitschko said air defences were repelling an enemy attack.

Russian state newspaper Izvestia says one of its freelance reporters has been killed in a drone strike near the Russian-occupied city of Donetsk in eastern Ukraine. Moscow has accused Ukraine's military of deliberately targeting Alexander Martemyanov.