In Kiev, there was a cache with combat grenades and a cylinder of mercury. It was found in the center of the capital by the Ukrainian Security Service.
The SSU press centre reported that the cache was equipped in a rented garage on one of the main streets.
It contained a cylinder of mercury, two F-1 combat grenades and two electric detonators.
According to experts, detonation of the found items or leakage of mercury in such amounts could lead to an emergency situation.
The investigation is now investigating all the circumstances of the offence and the persons involved.