The attack on Kryvyj Rih follows on nighttime drone attacks on the Zaporizhzhya and Kharkiv regions, which killed a 45-year-old man and injured dozens of others, including children.
Residential buildings were damaged in the attacks and powerful fires broke out in two large industrial facilities, according to the authorities. Kharkiv, Ukraine's second-largest city, is located about three miles from the Russian border and has been subjected to repeated attacks during the Russian war of aggression.
Wednesday's attack on Kryvyj Rih also triggered a large fire, and an unconfirmed video from the site shows flames and smoke rising from a damaged industrial building. Four people are reported to have been killed.
Volodymyr Zelenskyj is simultaneously accusing Russia of deliberate attacks on a transformer station in the Sumy region and a power line in Nikopol in the Dnipropetrovsk region, which have left thousands without electricity.
The Russian Defense Ministry reports that Ukraine has carried out two nighttime attacks on energy facilities in the border region of Kursk, resulting in 1,500 being left without electricity.