Ukraine war live updates: Russians inflict 'massive attack' on Ukraine's energy network, leaving power plants damaged

This is CNBC's live blog tracking developments on the war in Ukraine. See below for the latest updates. 

Russia used more than 50 missiles and 20 drones to attack Ukraine's infrastructure overnight, Ukraine's President Volodymyr Zelenskyy said Wednesday morning, with the country's energy network suffering a "massive attack."

"The enemy does not abandon plans to deprive Ukrainians of light. Again a massive attack on our energy!" Ukraine's Energy Minister German Galushchenko said on Facebook Wednesday.

Power plants and transmission facilities were attacked in a number of regions, he said, including the southern Zaporizhzhia region and Vinnytsia and Lviv in central and western Ukraine.

DTEK, the largest energy company in Ukraine, said on Telegram that Russia had attackedthree of its thermal power plants, causing "another extremely difficult night for the Ukrainian energy industry."

"The equipment is seriously damaged," the company said, noting that the latest attack was the fifth "massive shelling" of the company's energy facilities in the last six weeks.

Railway infrastructure in the southern city of Kherson came under fire Wednesday, the state-owned rail operator Ukrzaliznytsia said.

"Ukrzaliznytsia is under the enemy's sights again! On the morning of May 8, a terrorist country attacked the civilian railway infrastructure in Kherson. As a result of enemy strikes, the tracks at the city station were damaged," the railway network said on Telegram.

Railway officials limited the movement of a train on the Kyiv-Kherson route but said 99 passengers on the affected train were safe. The rest of Ukrzaliznytsia's trains continue to run according to schedule.

Russian officials say their armed forces do not target civilian