Police now have to answer whether the brothers were linked to an extremist group, headed by Russia’s most-wanted man – the Chechen Islamist militant Doku Umarov. The suspects’ family claims they had been under FBI surveillance for the past 5 years, and refuse to believe the young men carried out the atrocity. RT travelled to the North Caucasus, where the brothers’ parents now live, to learn more about their background.


WND-TV: Tsarnaev brothers Caucasus background


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