Chairman of the House Intelligence Committee Mike Rogers says that the Tsarnayev brothers suspected of this month's deadly Boston Marathon blast had foreign supporters and were trained. He demanded Russian law enforcers give additional information about the Tsarnayevs.
Chairman of the US House Committee on Homeland Security Michael McCaul noted that, with account of the complexity of the bomb, suspicions point to Afghanistan and Pakistan, where the brothers had probably been trained.
McCaul adds that their mother should be questioned if she arrives in the US.
