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Boston Deals With Aftermath Of Marathon Explosions

BOSTON - APRIL 16: People walk along Clarendon Street and Boylston Street on April 16, 2013 in Boston, Massachusetts. Security is especially tight in the city of Boston after two explosions went off near the finish of the Marathon, killing three people and injuring at least 141 others. (Photo by Darren McCollester/Getty Images)

Explosion at the Boston Marathon

Dozens of people have been seriously injured after two reported explosions at the finish line of the Boston Marathon.