Bomb Suspect Became Citizen on 9/11/12
PHOTO: Tamerlan Tsarnaev accepts the trophy for winning the 2010 New England Golden Gloves Championship in Lowell, Mass. FBI officials released this photo of Dzhokhar Tsarnaev.

The history of the two suspects in the bombing of the Boston Marathon includes some startling details, but none are more surprising than the revelation that they younger brother, Dzhokhar Tsarnaev, became a U.S. citizen last year on 9/11, the anniversary of the worst terror attack in U.S. history.

Friends say the younger brother, a student at UMass-Dartmouth, was a "bit of a druggie" and tweeted after the bombings that "I'm a stress free kind of guy."

His older brother Tamerlan Tsarnaev, meanwhile, considered himself a "very religious" Muslim who liked the movie "Borat," played piano and had a 3-year-old daughter.

Here are some factoids about the brothers:

Tamerlan Tsarnaev

    Age: 26

    Originally identified by FBI as Suspect 1, black hat

    Current status: Dead. Killed in overnight shootout.

    Born: Kyrgyzstan, according to his uncle Ruslan Tsarni; of Chechen ethnicity

    Family: has a 3-year-old daughter; father Anzor Tsarnaev lives in the semi-autonomous Russian province of Dagestan; two sisters, one lives in West New York, N.J.; other relatives in Maryland and Canada

    Described as an outgoing person who was a champion boxer

    New England boxing champion for two or three years in a row, former coach said

    A "decent" pianist

    Drove a Mercedes

    Liked the movie "Borat"

    Characterized as the extroverted brother by his former boxing coach

    Self-described "very religious" Muslim boxer, he told photographer Johannes Hirn

    Did not smoke or drink

    Told photographer he usually did not take his shirt off so girls wouldn't get bad ideas

Dzhokhar Tsarnaev

    Age: 19 (DOB: 7/22/93)

    Originally identified by FBI as Suspect 2, white hat

    Current status: Wanted. Subject of a major dragnet that has effectively shut down Boston and surrounding cities.

    Born: Kyrgyzstan, according to his uncle Ruslan Tsarni; of Chechen ethnicity

    Family: father Anzor Tsarnaev lives in the semi-autonomous Russian province of Dagestan; two sisters, one lives in West New York, N.J.; other relatives in Maryland and Canada

    Became a U.S. citizen on Sept. 11, 2012

    Characterized as the introverted brother by his brother's former boxing coach

    Went to Cambridge Rindge and Latin High School

    Took acting classes and advanced placement courses

    Star athlete with lots of friends in high school

    Sophomore at University of Massachusetts-Dartmouth

    Lived in the Pinedale residence hall

    Played soccer every Monday with UMass-Dartmouth classmates

    One teammate told ABC News that Dzhokar Tsarnaev was a "quiet guy" who was "a little bit of a druggie."

    Was apparently active on Twitter on the account @J_tsar, which tweted "I'm a stress free kind of guy" on Wednesday

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