 Officials in Russia said on April 3 they had arrested a woman suspected of involvement in an explosion at a St. Petersburg cafe that killed a prominent military blogger on Sunday as nationalist politicians and commentators accused Ukraine of the crime and called for retribution. Maxim Fomin, a well-known Russian military blogger and cheerleader for Russia's actions in Ukraine who called himself Vladlan Tatarskiy, was killed on Sunday in what appeared to be the second assassination on Russian soil of a figure closely associated with the conflict. Human investigators said they had arrested 26-year-old Daria Trapova, whom they said was suspected of bringing the explosives into the St. Petersburg cafe. In a video published by the Russian Ministry of Internal Affairs, Trapova says she had been detained for being at the place where Vladlan Tatarskiy was killed. According to the suspicion of involvement in the explosion at the St. Petersburg cafe, the investigators of the investigation committee of Russia, together with the operative services, were detained by Daria Trapova. The investigation activities required for her are set up as a motive for the crime. The investigation will solve the issue of the arrest of Trapova.