A general view of a mosque in the hometown of suspected Boston bombers Tamerlan and Dzhokhar Tsarnayev, on April 25, 2013 in Makhachkala, the Russian region of Dagestan. Their mother Zubeidat Tsarnaeva has attacked the US authorities over the death of her son Tamerlan, 26, who was killed during a shootout with police. Dzhokhar, 19, who was in hospital at the time of the press conference, has now been moved from the Beth Israel Deaconess Medical Center in Boston to Fort Devens prison.