Boston Marathon: Bombs caused pair of explosions

Associated Press
Medical responders run an injured man past the finish line the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa)
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BOSTON (AP) — The Boston Marathon says that bombs caused the two explosions heard at the finish line and that organizers were working with authorities to determine what happened.

Organizers made the announcement on the groups' Facebook page on Monday.

Authorities have headed onto the course to carry away the injured while stragglers in the 26.2-mile race were rerouted away from the site.

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