Photos: Boston Marathon Explosion Aftermath By editor • Apr 15, 2013 ShareTwitter Facebook Google+ Email VIEW SLIDESHOW 1 of 12 A Boston police officer clears Boylston Street following the explosions. Charles Krupa AP VIEW SLIDESHOW 2 of 12 A man and a woman comfort each other near a triage tent. Jessica Rinaldi Reuters/Landov VIEW SLIDESHOW 3 of 12 A Boston police officer wheels an injured boy down Boylston Street as medical workers carry an injured runner. Charles Krupa AP VIEW SLIDESHOW 4 of 12 Medical workers aid injured people at the finish line. The cause of the explosions has not been determined. Charles Krupa AP VIEW SLIDESHOW 5 of 12 A woman looks on as runners pass near Kenmore Square. Boston Police Commissioner Ed Davis says no other unexploded devices have been found. Alex Trautwig Getty Images VIEW SLIDESHOW 6 of 12 A policeman secures the area in front of the White House in Washington, D.C., after blasts in Boston. The block around the White House has been temporarily closed to pedestrians. Mladen Antonov AFP/Getty Images VIEW SLIDESHOW 7 of 12 An unidentified runner leaves the marathon course, crying, near Copley Square following the explosion. Winslow Townson AP VIEW SLIDESHOW 8 of 12 Police officers with their guns drawn hear a second explosion down the street near the finish line of the Boston Marathon. The first explosion knocked down a runner at the finish line. At least two people died and dozens were injured in the Monday blasts. John Tlumacki Boston Globe via Getty Images VIEW SLIDESHOW 9 of 12 Runners gather near Kenmore Square, about a mile away from the finish line, after two bombs exploded during the Boston Marathon. Alex Trautwig Getty Images VIEW SLIDESHOW 10 of 12 President Obama is updated on the Boston explosions by FBI Director Robert Mueller. Seated with the president are Lisa Monaco, assistant to the president for homeland security and counterterrorism, and Chief of Staff Denis McDonough. Pete Souza The White House via Getty Images VIEW SLIDESHOW 11 of 12 One of the blast sites on Boylston Street, near the finish line of the Boston Marathon, is investigated by two people in protective suits. Elise Amendola AP VIEW SLIDESHOW 12 of 12 A Boston police officer wheels an injured boy down Boylston Street as medical workers carry an injured runner following two explosions during Monday's running of the 2013 Boston Marathon. Charles Krupa AP Originally published on April 15, 2013 8:55 pm Photos of the explosion aftermath at Boston Marathon.