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Boston marathon explosions

BOSTON - APRIL 15: (EDITOR'S NOTE: THIS IMAGE CONTAINS GRAPHIC CONTENT) A person who was injured in an explosion near the finish line of the 117th Boston Marathon is taken away from the scene in a wheelchair. (Photo by David L. Ryan/The Boston Globe via Getty Images)

Explosions rock Boston Marathon

Two explosions struck the Boston Marathon as runners crossed the finish

line on Monday, injuring many.