Latest From Boston: 1 Boston Bombing Suspect Dead, Another At Large

Update [3:27 p.m.] Boston, still on public transportation and Amtrak lockdown, has begun canceling events tonight. Including:

And, more ironically,

Update [2:30 p.m.] Nevermind, then.

Update [2:20 p.m.]

Update [1:46 p.m.] A Twitter account belonging to Dzhokhar has been uncovered. Here’s a recent tweet, from April 17th, in which he tells someone that a story about a Boston Marathon bombing victim is fabricated.

Update [12:36 p.m.] Officials say they have several new leads, and that 60-70% of the area they are investigating has been monitored, but that no one had been apprehended yet.

Update [12:22 p.m.] An uncle of the two brothers, Ruslan Tsarni, who has become something of a social media sensation delivered an impassioned rebuke of the alleged actions of his nephews today outside his home in suburban Maryland, asking Dzhokhar to turn himself in and ask for forgiveness. He added that the boys were “losers” who were “hating everyone” who had been more successful than they were, and said that their actions had nothing to do with Chechnya, which the boys left more than a decade ago.

Click here for a detailed timeline. And here for a live feed of announcements and addresses made by public officials and law enforcement.

Update [11:43 a.m.] WBUR Boston reports that 26-year-old MIT police officer Sean Collier was found dead in his car at 10:30 p.m, with multiple gunshot wounds, ten minutes after shots were reported on campus. He is believed to have been killed by the two Boston Marathon bombing suspects. WBUR also reports that Dzhokhar, the brother who is still at-large, is registered as a student at the University of Massachusetts-Dartmouth.

Update [9:57 a.m.] Another suspect–a third accomplice–is believed to have been apprehended on an Amtrak train in East Norwalk, Connecticut.

Update [9:27 a.m.] FBI releases new photo of Dzhokhar, a wrestling “all-star” and high school scholarship recipient. Update [8:58 a.m.] Mother Jones reports that a Youtube account that appears to belong to Tamerlan Tsarnaev, the deceased brother, features videos “extolling an extremist religious prophecy associated with Al Qaeda.”

Update [8:51 a.m.] WBUR-FM, a Boston NPR affiliate, has spoken to a Larry Aaronson a former teacher at Cambridge Rindge and Latin School, the public high school where Dzhokhar attended. Utterly shocked, Aaronson, a retired social studies teacher, said “he had a heart of gold, he was a sweetheart,” adding that he seemed “compassionate,” “caring,” and was an “all-around wonderful kid.”

Update [8:42 a.m.] The Boston Globe’s Wesley Lowery reports that a man has been removed from near the apartment in Cambridge where Dzhokhar Tsarnaev was believed to have lived.

Early this morning in Watertown, Massachusetts one of the suspects in the Boston Marathon bombing, 26-year-old Chechen man Tamerlan Tsarnaev, was killed in the midst of a shootout. According to WBUR-FM Boston, he reportedly died of multiple gunshot wounds and blast wounds after 1:00 a.m. this morning at a hospital. (Other reports, from NBC, say the brother at-large, Dzhokhar, ran over his brother while fleeing.) Dzhokhar, 19, born in Kyrgyzstan and also a native of Chechnya, is still at large and reportedly lives in Cambridge. All major universities, school, and public transit in the region have been shut down. Below is the FBI photo of the remaining suspect.

Before the firefight in Watertown, during a getaway attempt through Cambridge last night, an MIT police officer was killed, and the brothers threw explosive devices at police during a getaway attempt.

Check back here for more updates as the story develops.