Russia carried out a large scale blitz on Ukraine’s energy systems and infrastructure overnight, with a mass barrage of drones and missiles hitting regions across the country.
Ukraine's armed forces said the Thursday night raid targeted 10 separate regions, with 60 Shahed drones and 39 missiles of varying types were seen across the country. Of these, 58 drones and 26 missiles were shot down by air defences.
Ukraine's state-owned grid operator, Ukrenergo, said that the attack deliberately targeted energy infrastructure, including thermal and hydroelectric power plants across central and western regions.
DTEK, Ukraine's largest private electricity operator, added on Friday that three of its thermal power plants had been damaged in the attack.
Elsewhere, five people were wounded during the attack in Ukraine's Dnipropetrovsk region, said local governor Serhii Lysak. The injured included a five-year-old girl.
The bombardment in the west of Ukraine caused the Polish Armed Forces to scramble its own aircraft, the country's operational command said on social media.
Last week, Warsaw demanded an explanation from Moscow after one of its missiles strayed briefly into Polish airspace during a major missile attack on Ukraine, prompting the Nato member to activate F-16 fighter jets.
Romania's defence ministry also said an investigation has been launched after fragments that appear to be from a drone were identified on its territory on Thursday evening in an agricultural area of Braila county, close to the border with Ukraine.
It did not provide additional details, although since the start of the full-scale invasion of neighbouring Ukraine, Nato member Romania has confirmed drone fragments on its territory on several occasions.