Explosion at the Boston Marathon

BOSTON - APRIL 15: Police officers with their guns drawn hear the second explosion down the street. The first explosion knocked down a runner at the finish line of the 117th Boston Marathon. (Photo by John Tlumacki/The Boston Globe via Getty Images)

View gallery

35 photos

Dozens of people have been seriously injured after two reported explosions at the finish line of the Boston Marathon.

View Comments (0)