<p>One of the blast sites on Boylston Street near the finish line of the 2013 Boston Marathon is investigated and guarded by police in the wake of two blasts in Boston Monday, April 15, 2013. (AP Photo/Elise Amendola)</p>
April 15, 2013
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April 15, 2013 2 p.m.
Boston Marathon Bombing
Images from the scene of the Boston Marathon bombing Monday, April 15, 2013.