Two explosions at the Boston Marathon finish line have resulted in multiple fatalities. Here are images, updates and reactions from across Twitter.
Explosion at coply twitter.com/Boston_to_a_T/…— Boston to a T (@Boston_to_a_T) April 15, 2013
Related video on the Boston Marathon bombing
VIDEO: Second video shows explosion at Boston Marathon finish line youtube.com/watch?v=0EP7j3…— Cork Gaines (@CorkGaines) April 15, 2013
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