The Vladivostok police have started looking for two girls involved in the explosion at the joint office of the Ray and Primoil oil companies. On Friday, approximately at noon local time, two unknown girls, disguised as Father Frost and Snow-Maiden, entered the office situated at the Vladivostok House of Youth, presented a gift to two businessmen and left in a white Toyota-Chaser made in 1987. Deputy director of the Ray firm Chichayev accepted the present and handed it over to director of the Primoil company Zadnepryanko. The box contained a desk-lamp wrapped in brown paper. After it was switched into the power network an explosion went off. As the press centre of the Interior Administration of the Maritime Territory said, Chichayev was seriously injured in the explosion. He was hospitalised. Zadnepryanko who had received light burns was given first aid at a hospital. A criminal case has been launched, and an investigation is under way.