The man threatened the building of the Cabinet of Ministers of Ukraine with a grenade, "Adyrna" reports.
The aggressor entered the building with a grenade and said that the building was bombed. He threatened to blow it up and said that "no one will come out alive", Izvestia reports.
According to TASS, the workers were evacuated due to danger.
According to Life Shot, the man had previously fought in the Donbas and was a sapper in the Aidar battalion.
Special forces are preparing to attack the building.