Klitschko names possible cause of strange nighttime vibrations in Kyiv

He said this during a national telethon.

“These weapons are going to the front. It is quite powerful. And maybe the vibration is related to this,” Klitschko explained.

For reference

Local residents of Kyiv and the Kyiv region felt a strange vibration today. Some residents even assumed that an earthquake had occurred, but seismologists assured that no seismological activity was recorded in the capital or in the region.

• On the night of May 28, invading Russian forces launched another massive attack on Kyiv. The Ukrainian Air Defense Forces destroyed over 40 drones in the capital's airspace.