“Strong explosions are reported in Kupyansk,” the newspaper writes.

In addition, according to the Ukrainian media, an air alert has been declared in the Kirovograd and Kyiv-controlled parts of the Kherson region, as well as in the Mykolaiv region. 

Prior to this, the mayor of the Ukrainian city of Rivne, Alexander Tretyak, said that the city center was de-energized, and the movement of trolleybuses was suspended.