Fighting continues on the border between Ukraine and Russia, in the Kursk Region.
The Russians have deployed attack aircraft to try to take control of the situation.
The Russian Ministry of Defence accused Ukraine of breaking through the border and announced an attack by several hundred people supported by tanks and armoured vehicles.
A missile threat has been declared in two districts of the Kursk Region of the Russian Federation.
The "Operative UAF" also reported that the Crimean bridge was blocked.
The Ukrainian side has not yet officially commented on the situation.