Nighttime Russian drone and missile attacks struck across Ukraine, killing at least four people, President Volodymyr Zelensky said Tuesday, a day after a heavy barrage pounded energy facilities throughout the country.

Zelensky said the attacks included 81 drones, as well as cruise and ballistic missiles and that 16 people were injured. He did not say where the four deaths occurred, but two people died in a strike on a residential building in the industrial city of Kryvyi Rih, according to Oleksandr Vilkul, head of the city’s military administration.