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During manhunt, ‘explosion after explosion’
Soon after the FBI released images of the suspects they believe to be responsible for the Boston bombings, police responded to reports that two men had carjacked an SUV. A police chase and gun battle ensued with the suspects tossing explosives at their pursuers. One suspect, Tamerlan Tsarnaev, died during the chaos while his brother escaped by car. NBC’s Lester Holt reports.