For at least the third time this year, Russian drones attacked Ukraine's historic port city of Odesa, a UNESCO World Heritage site, injuring three people and setting residential and commercial buildings ablaze.

Russian forces launched a mass overnight drone attack on Ukraine's Black Sea port city of Odesa, wounding three people and damaging many apartments, local officials said early on Tuesday.

A Russian drone has hit a bus carrying workers in the Ukrainian city of Marhanets, killing nine people in a wave of attacks that targeted civilian infrastructure in east, south and central Ukraine, officials said.