Two Powerful Explosions Near Finish Line at Boston Marathon

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Guests inside the Colonnade Hotel watch from windows as the area... News Photo2013 Boston Marathon,Bomb,Boston - Massachusetts,Boston Marathon,Boston Marathon Bombing,Boylston Street,Emergencies and Disasters,Exploding,Explosive,Final Round,Finance,Geographical Locations,Guest,Horizontal,Marathon,Massachusetts,North,North America,Prudential Center - Boston,Sports Race,Stretching,The Americas,The Media,Track And Field,USA,Watching,WindowPhotographer Collection: Bloomberg 2013 BloombergGuests inside the Colonnade Hotel watch from windows as the area around the Prudential Center is closed down after two explosions occurred along the final stretch of the Boston Marathon on Boylston Street in Boston, Massachusetts, U.S., on Monday, April 15, 2013. Powerful bombs killed two people and injured scores near the finish of the Boston Marathon, turning one of the world's oldest road races into bloody chaos. Photographer: Kelvin Ma/Bloomberg via Getty Images