Reuters US News ?@ReutersUS 8m Boston marathon headquarters locked down after explosion reported near finish line: spokesman #breaking
Update 300 (2:54 AM EDT) Boston Globe reports that all the chaos is about the Marathon Bombers, but they are the only source currently. Police Scanner also says they are after White Hat. Still speculative.
Update 301 (3:02 AM EDT) Here's the latest confirmation from WCVB and others "Strong connection between this and MIT Shooting. FBI investigating possible connection to Boston Marathon Bombing. One suspect at large, one in custody.
Update 302 (3:03 AM EDT)According to WCVB photographer in the field, White hat suspect is "oustanding, armed with rifle, might be leaving a trail of explosives"
Update 303 (3:07 AM EDT) John Atwater, WCVB Tweets "Police say explosives are everywhere"
Update 304 (3:15 AM EDT) WHDH also confirming that they are going after the Boston Marathon bombing suspects
Update 305 (3:22 AM EDT) Two suspects named by some, but this is not completely official ... a lot of talk that it is the case.
Update 306 (3:25 AM EDT) ABC News says it cannot confirm the people involved in this chase are related to the bombings. FBI also says they are investigating at the time.
Update 308 (3:36 AM EDT) Marathon bomber with white hat still on the loose. The first suspect, in dark glasses, has been killed. Officer wounded, treated at Mt. Auburn hospital. Confirmed by multiple law enforcement officers that these are the marathon bomber suspects. MIT, Car Jacking and Bombing all connected.
Update 309 (3:47 AM EDT) Police to Camera men -> Do not stop your car for anyone other than a uniformed police officer. If you live in Watertown do not open your door for anyone other than police and police are going door by door, clearly identified, going into people's homes.
Update 310 (3:48 AM EDT) Washington on if it's the Marathon bombers: "It looks promising"
(3:52 AM EDT) LAW ENFORCEMENT -> Air horn followed by intended detonation in Watertown in the very near future. Not happening according to Press conference
Update 312 (4:02 AM EDT) MIT officer that was killed was attending to a gas station robbery in Cambridge done by the Boston Marathon Bombers. They have now murdered 4 people. They have also injured another police officer who is currently in surgery.
Update 313 (4:03 AM EDT) Home on Dexter, near initial gun fight, has been completely lit up by spotlights.
Update 314 (4:10 AM EDT) Local Swat just rolled into Auburn street.
Update 315 (4:14 AM EDT) Newest Picture of suspect that is currently on the run. Update 316 (4:48 AM EDT) MA D.A confirms one suspect dead, second at large, threw explosives at police from vehicle.
Update 317 (5:18 AM EDT) Police have investigated the suspicious package in the area of 500 Memorial Drive. It presents no danger to the MIT community. Update 318 (5:20 AM EDT) live press conference from hospital about dead suspect. He died from gunshot wounds and blast wound.
Update 319 (5:30 AM EDT) Michael Skolnik on Twitter: Suspect 1 arrived at hospital in cardiac arrest. they worked on him for 15 mins, but could not save him. shrapnel wounds, gun shots
Update 320 (6:49 AM EDT) All Boston public schools and transportation closed. All travel in and out of Watertown is closed. Amtrak cancels all Boston routes today.
Update 321 (6:50 AM EDT) @AP: BREAKING: AP sources: Boston bomb suspects from Russia region near Chechnya, lived in US at least 1 year. Update 322 (7:01 AM EDT) AP: Surviving Boston bomb suspect identified as Dzhokhar A. Tsarnaev, 19, of Cambridge, Mass.
Update 323 (7:16 AM EDT) CNN & NBC both reporting suspect 1 & 2 are brothers from Russian border with Chechnya.
Update 325 (8:05 AM EDT) the shelter in place has been extended to the entire city of boston, cambridge, alston-brighton, newton and water town as per gov deval patrick
Update 327 (8;19 AM EDT) All taxi/cab service is shut down for the day. - ABC & CNN Update 328 (8:30 AM EDT) Transit Officer identified: Officer shot and wounded in Watertown is Richard H. Donohue Jr, 33, a transit officer for 3 years, transit police chief says Update 329 (8:36 AM EDT) FBI source tells the LA Times' Richard Serrano that searchers have found blood spots, suggesting suspect might have been wounded..
Update 330 (9:44 AM EDT) WGRZ reporting car stopped in Niagara Falls with Russian nationals during a routine traffic stop. There are suspicious bags in the car, which has MA plates. Bomb squad en route and FBI is aware of situation.
Update 331: (9:51 AM EDT) NBC reporting police have surrounded a suspicious vehicle in CT.
Update 332; (9:54 AM EDT) The University of Massachusetts Amherst says "Suspect No. 1" was NOT a student. "Dzhokhar Tsarnaey is not a UMass Amherst student and was never a UMass Amherst student," the university posted on its website. Earlier police said that Tsarnaey, 26, was killed. His younger brother remains at large.
Update 333: (9:55 AM EDT) ABC News: CT state police told by Boston authorities that the bombing suspect at large may be operating a gray Honda CRV (plate: 316 ES9) w/ MA tags."
Update 334: (10:01 AM EDT) Police officer who was killed on MIT Campus was Sean Collier. He was 26 years old. Update 335: (10:13 AM EDT) @ScottIsaacs: Dzhokhar Tsarnaev is a student at UMASS Dartmouth and was seen there this week AFTER the bombings #wcvb
Update 336: (10:22 AM EDT) CBS is reporting officers have found gray CR-V car. ===> BOSTON POLICE ASKING MEDIA NOT TO POST OFFICER MOVEMENTS OR WHAT HOMES BEING SEARCHED. PLEASE RESPECT THIS <===
Update 337: (10:58 AM EST) Police are calling in for a Russian interpreter, may have found the carjacked car. The press are very concerned, all are low to the ground. CNN Live
Update 338: (11:09 AM EST) The Boston Globe ?@BostonGlobe 46s State Police: Suspect abandoned car and is believed to have fled on foot.
Update 339: (11:32 AM EST) Uncle doing an interview on NBC, asked why the suspects might have done this he says because they are "losers"