AP sources identify the surviving Boston bomber as Dzhokhar Tsarnaev, 19. The man is said to be from Russia’s south, not far from the Chechen Republic.
The man reportedly lived in Turkey before arriving legally in the US at least a year ago.
The name is listed among the recipients of Cambridge scholarships in 2011.
The second suspect is said to be his brother Tamerlan, 26.
An NBC report claims the two immigrated at least two years ago. One of the brothers is said to have a Massachusetts drivers’ license.
Some reports say the two may have arrived in the US from Turkey and have Turkish citizenship.
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 Cambridge school mentions Dzhokhar Tsarnaev as its athlete of the month for February 2011, saying that he is an athlete.
The VKontakte page studied by RT mentions a school in Makhachkala, the capital of the Republic of Dagestan, as a place Tsarnaev studied between 1999 and 2001.
The Tsarnaev family moved to Dagestan from Kyrgyzstan in 2001, the school spokesman told RT. Dzhokhar studied there for just one year and produced no particular impression, good or bad, on the teachers.
Dzhokhar has several Chechen-related interests stated in his profile. He states that he speaks Russian, English and Chechen and holds career and money as his personal priorities. He claims he is a believer in Islam.
The page has but a handful of posts, most of them jokes. The owner’s last visit of the page was from a mobile phone shortly before the shooting in Boston started.
Some Russian-language comments on the page accuse Tsarnaev of being behind the bombing. They were posted after the news of a possible connection of a Dzhokhar Tsarnaev to the bombing broke.