Russia launched an overnight attack on the northeastern Ukrainian city of Sumy, injuring 11 residents, including four children, Ukraine's emergency services said.
The Sumy region borders Russia and has been under constant attack from both drones and missiles.
The emergency services said on Telegram messenger that Russia had struck a residential multi-storey building, private houses and infrastructure facilities.
Local governor Ihor Kalchenko said Russia had attacked the railway depot, destroying several carriages and damaging buildings.
Meanwhile, the Russian western city of Oryol is restricting supply of heat and hot water after Ukrainian drones hit a pipeline at a local power plant today, local authorities said.
"It will be necessary to limit the heat and hot water supply to buildings in the Sovetsky, Zheleznodorozhny and Severny districts of the city of Oryol," the governor of the Oryol region, Andrey Klychkov, wrote on social media.
Both Ukraine and Russia have intensified attacks on each other's energy infrastructure in the past several weeks as peace talks hit a dead end.
Separately, Russia's defence ministry said its forces shot down 130 Ukrainian drones overnight, mainly over the western regions as well as the Yaroslavl and Moscow regions.
Local authorities also said infrastructure was hit near the city of Vladimir, while a kindergarten in Yaroslavl, some 280km northeast of Moscow, has been closed following a drone attack.
