Ukraine's army has said Russia fired 36 cruise missiles on Thursday, a day after six apparently radar-reflecting balloons were spotted over Kyiv.
The missiles fired from land and sea killed a woman and hit critical infrastructure, officials said.
Ukraine noted there had been a change in Russian tactics, in an apparent reference to the balloons above Kyiv.
Most of the balloons were shot down, Kyiv's military said, adding that they were being propelled by wind power.
Images circulating on social media show an unsophisticated design, with a radar-reflecting, cross-shaped structure trailing under the balloon suspended by a line. บาคาร่า 168
Balloons with reflectors have also been spotted over the eastern region of Dnipropetrovsk in recent days.