Two Ka-52 helicopters were destroyed at the airfield in the Pskov region of Russia, and two more were significantly damaged — the Defence Intelligence of Ukraine

On the night of October 31, a powerful explosion occurred at the Russian Armed Forces "Veretie" air base, which destroyed and damaged military helicopters. 

To eliminate the consequences of the explosions and "find sabotage groups", the personnel of the military unit was put on alert.

Photo: Main Directorate of Intelligence (Ukraine)