Live video from CBS Boston.
UPDATE - 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.
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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