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Boston manhunt: Timeline of major events

  • Everything you need to know as police pursuit continues
  • Early morning gunfight ended with one suspect dead
  • Watertown resident captured shootout on video
Boston manhunt: Timeline of major events

All times are approximate:

Thursday, 10:20 p.m. ET: A convenience store near MIT is robbed at gunpoint.

10:30 p.m.: MIT police officer Sean Collier, 26, is found shot multiple times in his vehicle; he is later pronounced dead.

A pair of armed men carjack a Mercedes SUV in Cambridge. They tell the driver they are the marathon bombers, according to a source who spoke with CNN. The driver remains in the vehicle for 30 minutes, then escapes unharmed at a gas station.

Friday, 1 a.m.: Police locate and pursue the SUV in Watertown, just west of Boston.

1:33 a.m.: Explosive devices are thrown from the SUV toward police and gunfire is exchanged. "Suspect No. 1," later identified as 26-year-old Tamerlan Tsarnaev, is killed. Boston transit police officer Richard H. Donohue Jr. is seriously injured, but expected to survive. Surviving suspect flees.

3:45 a.m.: Massachusetts State Police say they will be going door to door in Watertown.

4:30 a.m.: Law enforcement confirms MIT suspects are the Boston Marathon suspects, manhunt continues for "Suspect  No 2."

5:01 a.m.: Boston Police release surveillance photo from convenience store robbery and encourage Watertown residents to stay where they are.

6 a.m.: All Boston mass transit shut down. Residents of Watertown, Newtown, Cambridge and other towns west of Boston urged to stay inside.

6 a.m.: Police go door to door in Watertown in search of Suspect No. 2.

7 a.m.: Suspects identified as Tamerlan Tsarnaev, 26, deceased, and Dzhokar A. Tsarnaev, 19; soon afterward, it's confirmed they are brothers originally from Chechnya.

8 a.m.: Boston police commissioner tells all residents to "shelter in place," effectively placing the city on lockdown.

9:32 a.m.: Boston Police tweet this image of Dzhokhar as law enforcement swarm Watertown.

Continue to follow all developments on's constantly updating live blog.

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