Key moments related to the search for the Boston Marathon bombing suspects, based on reports from the Massachusetts governor, the Middlesex County district attorney, Massachusetts State Police and Boston police.

Boston Marathon suspects captured in surveillance camera
Boston Marathon suspects captured in surveillance camera (FBI)
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— At 5:10 p.m. Thursday, investigators of the bombings release photographs and video of two suspects. They ask for the public's help in identifying the men.

— Around 10:20 p.m., shots are fired on the campus of the Massachusetts Institute of Technology in Cambridge, just outside Boston.

— At 10:30 p.m., an MIT campus police officer who was responding to a disturbance is found shot multiple times in his vehicle, apparently in a confrontation with the Boston Marathon bombing suspects. He is later pronounced dead.

— Shortly afterward, two armed men reportedly carjack a Mercedes SUV in Cambridge. A man who was in the vehicle is held for about a half hour and then released unharmed at a gas station on Memorial Drive in Cambridge.

— Police soon pursue the carjacked vehicle in Watertown, just west of Cambridge.

— Some kind of explosive devices are thrown from the vehicle in an apparent attempt to stop police. The carjackers and police exchange gunfire. A transit police officer is seriously injured. One suspect, later identified as Suspect No. 1 in the marathon bombings, is critically injured and later pronounced dead.

— Authorities launch a manhunt for the other suspect.

 

Police in Watertown
Police in Watertown (WBZ TV)
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— Around 1 a.m. Friday, gunshots and explosions are heard in Watertown. Dozens of police officers and FBI agents converge on a Watertown neighborhood. A helicopter circles overhead.

— Around 4:30 a.m., Massachusetts state and Boston police tell people living in that section of eastern Watertown to stay in their homes. They identify the carjackers as the same men suspected in the marathon bombings. Overnight, police also release a photograph of a man believed to be Suspect No. 2 wearing a gray hoodie-style sweatshirt. The image apparently is from surveillance video taken at a gas station.

— Around 5:50 a.m. authorities urge residents in Watertown, Newton, Waltham, Belmont, Cambridge, Arlington and the Allston-Brighton neighborhoods of Boston to stay indoors. All mass transit is shut down.

— Around 6:35 a.m., The Associated Press reports that the bomb suspects are from a Russian region near Chechnya and lived in the United States for at least a year.

— Around 6:45 a.m., The Associated Press identifies the surviving Boston bomb suspect as Dzhokhar A. Tsarnaev, 19, who has been living in Cambridge.

— Around 8 a.m., Boston's police commissioner says all of Boston must stay in their homes as the search for the surviving suspect in the bombings continues.

 

FBI wanted poster for Dzhokar Tsarnaev
FBI wanted poster for Dzhokar Tsarnaev (FBI)
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— Around 8:40 a.m., a U.S. law enforcement official and the uncle of the suspects confirm that the name of the slain suspect is Tamerlan Tsarnaev, Dzhokhar Tsarnaev's older brother.

— Around 10:20 a.m., Connecticut State Police say a car believed to be linked to Dzhokhar Tsarnaev has been recovered in Boston. They initially call it a Honda CRV, but authorities later say it was a Honda Civic.

 

— Around 10:35 a.m., the University of Massachusetts Dartmouth says it closed its campus and ordered an evacuation after confirming that Dzhokhar Tsarnaev is registered there. The school says it closed the campus "out of an abundance of caution" as the search continued.

— Around 11:30 a.m., Massachusetts State Police explain that the brothers suspected in the bombings were in the Honda when they carjacked the Mercedes SUV. For a while, each drove one of the two vehicles, but then ditched the Honda and reunited in the Mercedes.

— Around 12:35 p.m., state police in Watertown say officers are searching door-to-door but still have not found the bombing suspect.

 

A Boston SWAT team member takes up as posistion as they search for 19-year-old bombing suspect Dzhokhar A. Tsarnaev
A Boston SWAT team member takes up as posistion as they search for 19-year-old bombing suspect Dzhokhar A. Tsarnaev (Mario Tama/Getty Images)
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— Around 6:30 p.m., Massachusetts Gov. Patrick Deval announces that mass transit is resuming and the "stay indoors" order is being lifted even though one suspect remains on the lam. State police say that suspect, Dzhokhar Tsarnaev, fled on foot and there is indication he has a vehicle. They believe he is still in the state because of his ties to the area.

—Around the time the order is lifted, a flurry of gunfire breaks out in the same community that was being searched. Law enforcement officials locate Dzhokhar Tsarnaev in a boat parked behind a home.

—Dzhokhar Tsarnaev is taken into custody by police at approximately 8:45 p.m. Spontaneous applause breaks out among police and onlookers surrounding the scene and residents take to the streets to cheer police.

 


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