Live video from CBS Boston. Scroll down for latest updates.
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PHOTO - SUSPECT HAS BEEN CAPTURED ALIVE
There are reports the second suspect has been shot multiple times and is motionless in a small boat. Police are proceeding with caution out of fear he has booby-trapped the boat.
01:40 GMT: Tsarnaev is listed in “serious, if not critical condition” after suffering gunshot wounds to the neck and leg, according to CBS News.
01:37 GMT: Despite earlier reports to the contrary, arresting officers will not read Dzhokhar Tsarnaev his Miranda rights, citing a so-called "public safety exception." The Department of Justice has listed Tsarnaev as a “high value detainee” on their website.
01:31 GMT: US federal agents are planning to closely examine the slain Tamerlan Tsarnaev’s trip to Russia last year, where he may have met with extremists, according to a report by The New York Times.
00:44 GMT: Tsarneav is in custody and alive, although police have requested an ambulance on the scene. Police say the standoff is over.
00:42 GMT: The three individuals detained in relation to the investigation are two men and a woman, according to a CNN report citing the FBI.
00:34 GMT: Three people have been detained in New Bedford, Massachusetts in connection with the Boston Marathon bombing investigation, the Boston Globe reports.
00:30 GMT: FBI officials confirmed to the Washington Post that Tamerlan Tsarnaev, the older of the two suspects in the Boston Marathon bombing, who was killed Thursday night, was interviewed two years ago in Boston on request from a "foreign government." Agents found “no derogatory information” relevant to his suspected terrorist ties. The interview was held in 2011, and the anonymous official would not reveal the terrorist organization in question or the country that requested the investigation.
00:15 GMT: A fire has been reported in the boat, as noted by NBC News. Tsarnaev was seen from a police helicopter using thermal imaging technology.
23:51 GMT: A Watertown resident tipped off police that Tsarnaev might be in the area when she noticed a ladder was amiss, according to NBC News.
23:50 GMT: Multiple outlets report that police are working with caution because of the possibility that the suspect is wearing a suicide vest and that the boat could contain full fuel tanks. WFXT, Boston’s Fox affiliate, reported a robot is being sent in.
23:44 GMT: Police have removed a cover from the boat where a man thought to be Tsarnaev is hiding. He is thought to be wounded, with the Boston Globe tweeting, "He's not moving."
23:36 GMT: Contrary to earlier reports, police now say they did find pipe bombs inside the Boston Marathon bombing suspects’ home, according to John Miller of CBS News. A bomb squad also found IEDs along the chase route Thursday night. There was “meant to be a controlled detonation” of the explosives found at their residence.
23:19 GMT: Metro West Daily News reporter Laura Krantz tweets that a suspect has been “found in a boat” and is "likely dead," adding that there is blood on the scene.
23:08 GMT: The Boston Marathon bombing suspect is reportedly "pinned down" under a boat in Watertown, a source has told the Boston Globe.
23:02 GMT: Tactical teams are approaching a boat from which gunshots are reported to have been fired. Multiple EMS teams have been requested to the scene.
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MIT campus police officer shot.
Later pronounced dead at a local hospital.
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Raw Watertown Video
Man lying on ground was carjacked by suspects.
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Audio of shootout begins at 20 seconds.
Gun battle in Watertown with suspects after MIT police officer was shot dead.
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Don't skip this one.
Huge escalation of shoot-out at 55 seconds.
Video of gun battle between police and bombing suspects.
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The Bomber Still Alive - The Younger Brother
Dzhokhar A. Tsarnaev received a Cambridge city scholarship in 2011 and was accepted to UMass Boston.
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