The Boston Marathon bombings were a terrorist attack that happened during the 2013 Boston Marathon on April 15, 2013 in Boston, Massachusetts. At 2:49 PM EDT, two bombs exploded thirteen seconds apart near the finish line. Three people were killed and an estimated 264 people were injured. The windows of stores near the explosions were broken, and a window on the third floor of the Boston Public Library, across the street from the site of one of the explosions, was damaged.