Russias Federal Security Service (FSB) thwarted an attempted bomb attack against a humanitarian aid collection point in the Samara region, state mediareported Tuesday.A 30-year-old accomplice of the Russian Volunteer Corps one of the pro-Kyiv militias fighting against the Russian army in Ukraine allegedly died after an explosive device he was carrying went off, the Interfax news agency reported.During the arrest of the attacker, the improvised explosive device he seized self-detonated, as a result of which he received injuries incompatible with life, the FSB said in a statement.No civilians or security officers were said to have been hurt by the blast.The FSB said Ukrainian intelligence services had recruited the man who was not named in September with the help of Russian Volunteer Corps member Alexander Kudashev.Around the same time, Russian authoritiescharged Kudashev for his participationin illegal armed groups or military actions against Russiaandissued a warrant for his arrest.His girlfriend, environmental activist Irina Izmailova, wasarrested on charges of manufacturing explosives on behalf of the Russian Volunteer Corps.President Vladimir Putin earlier in March instructed the FSB to wage a sweeping crackdown on volunteer units fighting on the side of Ukraine, whom he called "scum" traitors.The militias, which say they are made up of Russian citizens who oppose their home countrys invasion of Ukraine, have claimed responsibility for a string of incursions into Russian border regions over the past year.