In this image released by the Federal Bureau of Investigation on April 19 two suspects in the Boston Marathon bombing walk near the marathon finish...
In this image released by the Federal Bureau of Investigation on April 18 a suspect in the Boston Marathon bombing walks near the marathon finish...
Runner embraces another woman on the marathon route near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013...
Police officers with their guns drawn hear the second explosion down the street. The first explosion knocked down 78-year-old US marathon runner Bill...爆炸, 警察
Boston Police look at blown out windows at the scene of the first explosion on Boylston Street near the finish line of the Boston Marathon.爆炸
In this image released by the Federal Bureau of Investigation on April 19 Dzhokhar Tsarnaev, 19-years-old, a suspect in the Boston Marathon bombing...喬卡・查納耶夫, 波士頓馬拉松, 面部相
View of a partially enclosed, plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts, May 9, 2013....
Close-up of running shoes hanging on a plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts, May...
Close-up of messages written on 'One Boston' leaflets and posted at a memorial for the victims of the Boston Marathon Bombing , Copley Square,...
View of a partially enclosed, plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts, May 9, 2013....
In this handout provided by the Massachusetts State Police, the boat in which Boston Marathon bombing suspect Dzhokhar A. Tsarnaev is hiding is seen...水上交通工具, 喬卡・查納耶夫, 美國聯邦調查局
Investigators in white jumpsuits work the crime scene on Boylston Street following yesterday's bomb attack at the Boston Marathon April 16, 2013 in...波士頓馬拉松
Officials react as the first explosion goes off on Boylston Street near the finish line of the 117th Boston Marathon on April 15, 2013.
Police clear the bleachers after two explosions went off near the finish line of the 117th Boston Marathon on April 15, 2013.爆炸, 馬拉松
Emergency personnel respond to the scene after two explosions went off near the finish line of the 117th Boston Marathon on April 15, 2013. Victim...
Man is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15,...
Second explosion goes off as a runner was blown to the ground by the first explosion near the finish line of the 117th Boston Marathon.爆炸
Two officials run away from the first explosion, right, on Boylston Street at the 177th Boston Marathon, April 15, 2013.爆炸
Athletic gear, including boxing gloves, skis, numerous sneakers and a basketball was found inside Tamerlan and Dzhokhar Tsarnaev, 3rd floor apartment...
Daily News front page April 24 Headline: KILLER DEAL - Bombers paid for lethal explosives - got 2nd set FREE - Tamerlan and Dzhokhar Tsarnaev used...
April Walton, manager of Phantom Fireworks store in Seabrook, New Hampshire, where Tamerlan Tsarnaev used a buy one, get one free coupon to buy two...
Daily News front page April 16 Headline: MASSACRE - At least 3 dead and 140 injured - A woman in tattered clothes looks on in shock amid carnage of...
Police block road after a campus police officer at Massachusetts Institute of Technology was shot near Building 32 during hunt for two suspects in...
Close-up of various objects, including flowers, a dreamcatcher, dog tags, and wind chimes, at a memorial for the victims of the Boston Marathon...
Close-up of flowers, including forsythia and a rose, in a plastic gallon jug at a memorial for the victims of the Boston Marathon Bombing , Copley...
View of people with umbrellas in a partially enclosed, plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston,...
Close-up of various objects, including flowers and American flags at a memorial for the victims of the Boston Marathon Bombing , Copley Square,...
Close-up of various objects, including T-shirts, flowers, rosaries, prayer flags, and a glow stick, at a memorial for the victims of the Boston...
Close-up of a plastic-covered message at a memorial for the victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts, May 9,...
Close-up of various objects, including T-shirts, flowers, and American & Puerto Rican flags, at a memorial for the victims of the Boston Marathon...
View of a partially enclosed, plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts, May 9, 2013....
Close-up of messages written on 'One Boston' leaflets and posted at a memorial for the victims of the Boston Marathon Bombing , Copley Square,...
Close-up of flower arrangements and American flags at a memorial for the victims of the Boston Marathon Bombing , Copley Square, Boston,...
View of a running shoe at the base of a plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts,...
View of a plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts, May 9, 2013.
Close-up of various objects, including flowers, running bibs, and American flags, at a memorial for the victims of the Boston Marathon Bombing ,...
Close-up of flowers around the base of a tree at a memorial for the victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts,...
Close-up of flowers and American flag, among other items, on and around a tree at a memorial for the victims of the Boston Marathon Bombing , Copley...
Close-up of various objects, including a T-shirt, flowers, rosaries, prayer flags, and a glow stick, at a memorial for the victims of the Boston...
View of running shoes hanging on a plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts, May 9,...
View of various objects, including T-shirts, flowers, a paper crown, and American flags, on and around a tree at a memorial for the victims of the...
View of a partially enclosed, plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts, May 9, 2013.
View of people with umbrellas as they walk through a memorial for the victims of the Boston Marathon Bombing , Copley Square, Boston, Massachusetts,...
Exterior view of a house at 410 Norfolk Street, Cambridge, Massachusetts, April 21, 2013. The house was the residence of brothers Tamerlan and...
View, from behind, of two people with umbrellas as they read messages written on 'One Boston' leaflets and posted at a memorial for the victims of...
View of a statue of John Singleton Copley and, beyond it, a partially enclosed, plastic-covered memorial to victims of the Boston Marathon Bombing ,...
View of running shoes hanging on a partially enclosed, plastic-covered memorial to victims of the Boston Marathon Bombing , Copley Square, Boston,...
In this image released by the Federal Bureau of Investigation on April 19 a suspect in the Boston Marathon bombing walks near the marathon finish...
In this image released by the Federal Bureau of Investigation on April 18 two suspects in the Boston Marathon bombing walk near the marathon finish...
Investigators in white jumpsuits work the crime scene on Boylston Street following yesterday's bomb attack at the Boston Marathon April 16, 2013 in...波士頓馬拉松
Boston Marathon bombing hero Carlos Arredondo watches the New England Patriots Super Bowl victory parade on February 7, 2017 in Boston,...
Crosses memorializing Boston Marathon bombing victims Martin Richard, Lu Lingzi and Krystie Cambell at a memorial to all victims of the Boston...
Crosses memorializing Boston Marathon bombing victims Martin Richard, Lu Lingzi and Krystie Cambell at a memorial to all victims of the Boston...
Marc Fucarile, survivor of the 2013 Boston Marathon bombing, and his wife Jen Regan react during a ceremony at Fenway Park before a game between...
Kids wave their American flags at the start of a candlelight vigil for the one-year anniversary of the Boston Marathon bombings at Garvey Park on...
Prime Minister David Cameron and Massachusetts Governor Deval Patrick visit the memorial to the Boston Marathon bombing victims on Boylston Street on...
Prime Minister David Cameron and Massachusetts Governor Deval Patrick visit the memorial to the Boston Marathon bombing victims on Boylston Street on...
Man with an American flag shirt stands at the memorial site in Copley Square for the deadly attacks on the Boston Marathon on Boylston Street April...
