BBC News - Boston Marathon hit by explosions
One could be a terrible accident, but two explosions means it has to be deliberate
Two explosions at the finish line of the Boston Marathon race have left an unknown number of people injured.
Video and photographs from Boston show a scene of confusion, with emergency services descending on the scene and bloodied spectators being taken to a medical tent.
Video and photographs from Boston show a scene of confusion, with emergency services descending on the scene and bloodied spectators being taken to a medical tent.
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