
A runner reacts near Kenmore Square after two bombs exploded during the 117th Boston Marathon on Monday. An unrelated, third explosion was confirmed at the John F. Kennedy Presidential Library and Museum.

Women embrace on the marathon route near Kenmore Square. Two people have been confirmed dead and scores injured after two bombs detonated near the finish line to the marathon.
Alex Trautwig/Getty
In this image from video provided by WBZ TV, spectators and runners flee from what was is thought to be twin explosions that shook the finish line of the 117th Boston Marathon on Monday. Here are the pictures we've gathered from the scene.
WBZ TV, via AP
A man injured by the first explosion receives assistance on Boylston Street.
John Tlumacki/The Boston Globe via Getty
A member of the bomb squad investigates a suspicious item on the road near Kenmore Square.

Two women react to the explosions that went off near the finish line of the Boston Marathon.
Josh Raab/Redux
Police officers with their guns drawn race past a fallen runner near the finish line as they hear the second explosion down the street.
John Tlumacki/The Boston Globe via Getty
A second explosion is seen as security personnel rush into the streets.
John Tlumacki/The Boston Globe, via Getty
Smoke from dual blasts fills the sky near the the explosion site at the finish line of the Boston Marathon.
Boston Globe, via Getty
Medical workers load injured attendees onto stretchers at the finish line of the Boston Marathon course.

An injured man is wheeled from the site of the explosion by medical responders.
Charles Krupa/AP
Two women comfort each other after the bomb attacks.

Debris litters the marathon route in the aftermath of the bombing.
Bruce Mendelsoh/AP
Boston police officers patrol Boylston Street near the scene of the explosions.