Explosions erupted in Kiev, reports the Ukrainian TV channel TSN.
The air raid alert in the city was announced at 04.45. Moscow time.
The explosions also took place in the city of Sumy, as well as in Romny, Sumy region in northeastern Ukraine.
No details provided.
Earlier, an air alert was announced in Sumy region and several other regions of the country.
Russia's air defense forces have destroyed 2 Ukrainian missiles and 27 unmanned aerial vehicles (UAVs) over the Kursk region. This was announced by the governor of the region Alexei Smirnov on his Telegram channel.