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      Suspected bombers are brothers, more information on suspects

      Tamerlan Tsarnaev was killed overnight during a violent confrontation with police

      NBC News and the AP have learned more information about the men suspected of carrying out the bombing attack at the Boston Marathon. Police say they are also responsible for a deadly string of incidents outside Boston overnight.

      They have been identified as Dzhokhar A. Tsarnaev, 19, who is on the loose, and Tamerlan Tsarnaev, 26, who was killed in a shootout with police. Both suspects are believed to be legal residents of the United States. They most recently lived on Norfolk Street in Cambridge, Mass, reports WCVB in Boston. The FBI descended on the apartment Friday morning.

      There have been mixed reports about where exactly the men are from, but it is believed they are from the Chechnya region in Russia and lived in Kazakkstan for some time before coming to the US in 2002 or 2003, reports NBC News. The family reportedly sought asylum in the US.

      Dzhokhar Tsarnaev, 19 â?? at large:

      Dzhokhar Tsarnaev was born in Kyrgyzstan and was naturalized as a U.S. citizen on Sept. 11, 2012, according to NBC News. He has a Massachusetts driverâ??s license.

      The Washington Post reports that he attended Cambridge Rindge & Latin High School. He was on the schoolâ??s wrestling team and, according to NPR, was the captain for two years.

      Dzhokhar Tsarnaev was awarded a college scholarship from the City of Cambridge in 2001.

      Dzhokhar Tsarnaev is a registered student at the University of Massachusetts at Dartmouth, according to the school, which evacuated students from campus Friday morning. Classmates reported seeing the suspect on campus after Mondayâ??s attack, the AP reports.

      Tamerlan Tsarnaev, 26 â?? deceased:

      Tamerlan Tsarnaev reportedly became a lawful permanent resident in 2007, according to NBC.

      Tamerlan Tsarnaev told a Boston University magazine in 2010 that his family fled Chechnya to Kazakhstan in the 1990s due to the conflict, reports NBC News.He reportedly said in the profile, "I donâ??t have a single American friend. I donâ??t understand them." He also said he was a Muslim.

      In 2009, he was arrested for assault and battery of a girlfriend, according to NPR .

      Tamerlan Tsarnaev studied as a part-time community college student at Bunker Hill Community College. Officials say he was a student there for three semesters: fall 2006, spring 2007 and fall 2008. Spokeswoman Patricia Brady said Friday they had little information on Tsarnaev other than that he studied at the Boston school.

      NBC News reports that Tamerlan Tsarnaev wanted to be an engineer.

      The AP reports that Tamerlan Tsarnaev traveled to Russia last year and returned to the U.S. six months later. He had not previously been labeled a threat to the United States, reports NBC News.

      Tamerlan Tsarnaev was reportedly a boxer and competed in the 2009 National Tournament of Champions, according to the Boston Globe . The Lowell Sun reports that he also competed in a Lowell Golden Gloves event and told the paper: "I like the USA... America has a lot of jobs. That's something Russia doesn't have. You have a chance to make money here if you are willing to work."

      Tamerlan Tsarnaev and the MIT officer allegedly killed by the brothers have link to the Somerville Boxing Club, although itâ??s unlikely they crossed paths, reports the AP. Tsarnaev trained at the gym several years ago and the officer began volunteering at the gym seven or eight months ago, according the gymâ??s co-founder Bob Covino.

      Family reaction:

      The father of the suspects, Anzor Tsarnaev, claims that his son is a smart and accomplished young man and `a true angel.' He reportedly told Russian media that be believes his sons were framed, reports NBC News. He told a Russian newspaper that he returned to Russia to die of a brain tumor.

      The suspectsâ?? aunt told the media that she believes the men are innocent. She says she believes the photos shown by the FBI were staged.

      The suspectâ??s uncle , Ruslan Tsarni of Maryland, told the AP that the brothers lived together near Boston and have been in the United States for about a decade. He says he is outraged and that his family is ashamed. He says he loves the U.S. and respects this country. â??Somebody radicalized them, but it wasnâ??t my brother,â?? said Tsarni.

      â??What I think was behind it: Being losers,â?? Tsarni told reporters.

      The AP reports that the FBI cordoned off a three-story brick building across the Hudson River from New York City in New Jersey where a sister of the suspects lives. The woman told authorities she has not been in frequent touch with her brothers and says she is very upset. The woman says her brothers are smart and great people.

      The search:

      There is massive search underway for Dzhokar Tsarnaev in Watertown, Mass, a suburb of Boston. Residents of Watertown and other neighboring towns are being told to stay in their homes until further notice. Starting Thursday night, the suspects are believed to have robbed a 7-Eleven, killed a MIT police officer, carjacked a vehicle, took part in a shootout with police and shot an MBTA officer.

      NBC News says at one point during the carjacking the suspects told the driver they killed the MIT officer and were the marathon bombers. NBC says Tamerlan Tsarnaev was shot by police when he exited the SUV the pair had carjacked. His brother reportedly drove over Tamerlan with the SUV as he fled from police. Tamerlan was taken to a hospital where he died.

      All of Boston is on lock down as law enforcement searches for the bombing suspect.

      Read more about the search for Dzhokar Tsarnaev.