On April 4, 2017, employees of the All-Russian Scientific-Research Institute of Aviation Materials (VIAM) laid flowers to the monument of hero-city Leningrad in the memory of the victims of the terrorist attack on the subway in St. Petersburg.
It should be noted, that the explosion thundered on the subway of St. Petersburg on April, 3. The explosive device was detonated on a train between “Sennaya Ploshchad” and “Tekhnologichesky Institut” stations.
Later the event was officially qualified as act of terrorism.