The week began with two bombs exploding at the Boston Marathon finish line on Monday. On Friday, nearly the entire city was in lockdown as U.S. military helped in a massive manhunt for Dzhokhar A. Tsarnaev. The 19-year-old was on the run after escaping a shootout with police during which his brother, Tamerlan, 26, was killed while reportedly wearing explosives. The duo allegedly killed an MIT police officer, held up a 7-11, and then carjacked a Mercedes-Benz before police caught up to them.
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