3da Abriil 2017, qalab ka kooban 200<unk>300 garaam (0.44<unk>0.66 lb) oo walxaha qarxa ah ayaa ku qarxay tareen maraya tunel u dhexeeya Sennaya Ploshchad iyo Tekhnologichesky Institut stations ee St. Petersburg Metro. Sida lagu sheegay bayaan ka soo baxay Wasaaradda Xaaladaha Degdegga ah, bamka ayaa lagu qarxiyay gaariga saddexaad ee tareenka. Goobjoogayaal ayaa sheegay in qaraxa uu ka dhacay meel u dhow albaabka. Isla markiiba ka dib qaraxa, qiiq ayaa buuxiyey madal. Muuqaal laga soo qaaday warbaahinta bulshada ayaa muujinaya dad badan oo ku dhintay madal iyo albaab bir ah oo lagu jeexjeexay xoogga qaraxa. Ka dib warbixinnada qaraxa, dhammaan saldhigyada metrooga ee St. Petersburg si dhakhso ah ayaa loo xiray.
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