>> For security services it may be the hardest type of militant attack to prevent, an assailant who self-radicalized with no ties to existent militant networks, blending in as an otherwise normal member of society. So called lone wolf. That's the picture emerging from the history of the main suspect in the Saint Petersburg suicide bombing.
Reuters' Christian Lowe in Moscow.>> For Russia, it is new. Up to this point, all the major attacks that have happened in Russia, and there have been plenty carried about Islamists, have been by people who are linked to existing groups who are more or less known to the authorities.
Generally, these are people tied to Islamist rebellions going on in Russia's North Caucasus region.>> On the surface, 23 year old suspect Akbarzhon Djalilov, would appear to be like millions of young Muslim men living in the country, a middle class immigrant from Kyrgyzstan, Reuters has learned he worked in an auto shop and liked martial arts.
Social media profiles showing Djalilov has an interest in a conservative and hard-line branch of Islam, but nothing to suggest violence. Russia's history in the Caucasus and it's involvement in the Syrian war has been cited in manifestos by past attackers.>> Islamic state, in particular, has been pushing this propaganda line.
But it's like that is having an influence on some people who are all ready sympathetic to these radical Islamist ideas.>> Djalilov's history is similar to recent attacks in the West, most recently the vehicle and knife assault outside London's Parliament last month. The perpetrator of that incident also had no known militant connections, a former petty criminal inspired by a global jihadi movement.