She also tried to calm people in Lithuania down and said the situation was being closely monitored.
"It just shows that there are no limits and restrictions for Putin's army. I would just wish to tell Lithuanian people as I see that information and that concern, so our institutions are really not recording any changes in radiation," the prime minister told reporters on Friday. "That situation is being closely monitored."
Earlier on Friday, Ukrainian emergency services said Russian forces attacked Europe's largest nuclear facility, and a fire broke out. A regional military administration's statement later said the fire was extinguished and the Zaporizhzhia nuclear power plant's 1st reactor unit was damaged but that has no impact on the block's safety.
Ukrainian President Volodymyr Zelensky earlier on Friday accused Moscow of resorting to "nuclear terrorism" and trying to "repeat" the Chernobyl disaster.
During the two-week war, Russian forces have also seized control of the Chernobyl nuclear power plant.
UK Prime Minister Boris Johnson on Friday accused Russian President Vladimir Putin of posing threat to the whole of Europe, and he also vowed to seek that an emergency meeting of the UN Security Council was held.