April 19, 2013 -- intro: 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:
quicklist: 1 title: Tamerlan Tsarnaev text:
quicklist: 2 title: Dzhokhar Tsarnaev text: