Dzhokhar A Tsarnaev, then a senior at a prestigious school, was awarded a $2,500 scholarship in May 2011 from the city of Cambridge, Massachusetts, to pursue higher education. Now the 19-year-old is on the run, described as "armed and dangerous" and suspected of the Boston Marathon bombing.
Two brothers from the Russian region near Chechnya, one now dead, one alive and at large. After hours of only grainy images of two men in baseball caps to go on, a portrait quickly emerged Friday of the young men suspected in the attack.
Tsarnaev and his older brother, Tamerlan, who was killed during a violent police chase, had been living together in Cambridge, outside Boston.
An uncle, Ruslan Tsarni, who lives in a Washington suburb, told The Associated Press that the men lived together and had been in the United States for about a decade. They came from a Russian region that has been plagued by an Islamic insurgency related to separatist wars.
The suspects' father told the AP his younger son was a second-year medical student and "a true angel."
"My son is a true angel," Anzor Tsarnaev told The Associated Press by telephone from the Russian city of Makhachkala. "Dzhokhar is a second-year medical student in the US. He is such an intelligent boy. We expected him to come on holidays here."
Dzhokhar Tsarnaev's page on the Russian social networking site Vkontakte says he attended Cambridge Rindge and Latin School, graduating in 2011, the year he won the scholarship. It was celebrated with a reception at City Hall, according to a news release issued at the time.
Before moving to the United States, Dzhokhar Tsarnaev attended School No. 1 in Makhachkala, the capital of Dagestan, a predominantly Muslim republic in Russia's North Caucasus that has become an epicenter of the Islamic insurgency that spilled over from Chechnya.
The principal of School No. 1 in Makhachkala, Irina Bandurina, told the AP that Tsarnaev left for the US in March 2002.
On the site, he describes himself as speaking Chechen as well as English and Russian. His world view is described as "Islam" and he says his personal goal is "career and money".
Tsarnaev appeared in the video released by authorities on Thursday, identified as Suspect Number 2, walking down a sidewalk, unnoticed by marathon spectators. He followed Tamerlan by about 10 feet (3 meters). He wore what appeared to be a gray hoodie under a dark jacket and pants, and a white baseball cap facing backward and pulled down.
Tamerlan was stockier, in khaki pants, a light T-shirt, and a dark jacket. The brim of his baseball cap faced forward, and he may have been wearing sunglasses.
According to the website spotcrime.com, Tamerlan was arrested for domestic violence in July 2009, after assaulting his girlfriend.
He was an amateur boxer, listed as a competitor in a National Golden Gloves competition in 2009.