1. AP sources identified the surviving Boston bomber as Dzhokhar Tsarnaev, a 19-year-old student from Chechnya who reportedly lived in Turkey before arriving legally in the U.S. The second suspect is said to be his brother Tamerlan, 26, who died last night during a shoot out with police.
2. There is a page at the Russian social network VKontakte ("In Contact") with the name Dzhokhar Tsarnaev living in Boston and studying at Cambridge Rindge & Latin School. The page also mentions a school in Makhachkala, the capital of the Republic of Dagestan, as a place Tsarnaev studied between 1999 and 2001.
3. According to RT, Dzhokhar stated in his profile that he speaks Russian, English and Chechen. It also says "career" and "money" as his personal priorities. He claims he is a believer in Islam.