[10][11] Dzhokhar was injured in the shootout and was later found, arrested, and hospitalized on the evening of April 19 after an unprecedented manhunt in which thousands of police officials searched a 20-block area of Watertown.

[12] In custody, Dzhokhar allegedly said during questioning that he and his brother also intended to detonate explosives in Times Square in New York City.

[14][15] The Tsarnaev family was forcibly moved from Chechnya to the Soviet republic of Kyrgyzstan in the years following World War II.

[40] An aspiring heavyweight boxer, Tsarnaev trained at the Wai Kru Mixed Martial Arts Center, a Boston club.

Tsarni said that Tsarnaev's radicalization started not during his visit to Russia in January 2012, but much earlier in Boston after he was influenced by a Muslim convert known as "Misha".

[54] Allakhverdov told The New York Review of Books that he rejected violence, was not Tsarnaev's teacher, had not spoken to Tamerlan in three years and had never met his family members.

[53] According to a 2010 photo essay in The Comment, the graduate student magazine of Boston University College of Communication, Tsarnaev said that he was working to become a naturalized citizen in time to be selected for the U.S. Olympic boxing team.

Russell dropped out of college at the end of her junior year and married Tsarnaev on June 21, 2010, in a 15-minute ceremony in an office at the Masjid Al Quran in the Dorchester area of Greater Boston.

[76] In late 2011, the Central Intelligence Agency put both Tsarnaev and his mother on its Terrorist Identities Datamart Environment database.

[76][77] Two Jewish men, Erik Weissman and Raphael Teken, as well as their roommate Brendan Mess, were killed in a triple homicide in Waltham, Massachusetts, on September 11, 2011, the tenth anniversary of the 9/11 attacks.

It was reported on April 23, 2013, that local authorities believed Tsarnaev may have been responsible for the triple homicide, and they and the FBI were investigating the possibility.

[78] A search warrant affidavit that was partially unsealed in November 2019 provided further details about Tsarnaev's alleged connection to the crime.

[87] He and his wife received public assistance and food stamps from September 2011 to November 2012, which included all the time Tsarnaev was in Russia.

[90] In an early report, Dagestan's interior minister Abdurashid Magomedov said through a spokesman that Tsarnaev "did not have contact with the [Islamist] underground during his visit".

[93] According to media reports, Tsarnaev was seen by Dagestan police, who were conducting surveillance, making six visits to a known Islamic militant in a Salafi mosque in Makhachkala founded by an associate of Ayman Zawahiri.

Nidal was under close surveillance by Dagestan's anti-extremism unit for six months as a suspected recruiter for Islamist insurgents, before the police killed him in May.

[104] Tsarnaev returned to the U.S. on July 17, 2012, having grown a long, thick beard[87][105][106][107] and wearing kohl around his eyes as a sign of his religious devotion to the Sunni of Islam and the example of Muhammad.

[110] After his return to the U.S., Tsarnaev created a YouTube channel with playlist links to two videos which were tagged under a category labeled "Terrorists", including one to Dagestani Islamic militant Amir Abu Dujana (Gadzhimurad Dolgatov, also known as 'Robin Hood', a commander of a small group in the Kizilyurt district, who was killed in battle in late December 2012); the videos were later deleted.

[61] Tsarnaev applied for U.S. citizenship on September 5, 2012, but Homeland Security held up the application for "additional review" because they found a record of the 2011 FBI interview of him.

[117] Tsarnaev and his wife were receiving state welfare benefits as late as November 2012, but not at the time of the Marathon Bombings in April 2013.

[119] In November 2012, Tsarnaev reportedly confronted a shopkeeper at a Middle Eastern grocery store in Cambridge, near a mosque where he sometimes prayed, after seeing a sign there advertising Thanksgiving turkeys.

[123] In the early hours of April 19, 2013, in Watertown, a suburb of Boston, Tsarnaev was apprehended by police after being shot multiple times.

The exact sequence of events and key details remain unclear, but the federal indictment substantiated, and witnesses said, that he was struck, pulled into the wheel well, and dragged 20 feet (6 m) by the Mercedes SUV his brother Dzhokhar was driving.

[125] He was taken to Beth Israel Deaconess Medical Center, where, despite efforts to revive him, he was pronounced dead from blood loss and cardiac and respiratory arrest.

[134] The burial was arranged by Martha Mullen of Richmond, Virginia, who said she was appalled by the protests at the funeral home, which she said "portrayed America at its worst" and wanted to find a way to end the impasse.

In response, Michael Bloomberg's Mayors Against Illegal Guns issued a statement explaining that they were using a list compiled by Slate, and apologized, saying that his name was "a mistake" and should have been removed.

After she arrived in the U.S. from Russia in 2002, she took classes at the Catherine Hinds Institute of Esthetics before becoming a state-licensed aesthetician and getting a job at a suburban day spa.

[76][77][144] Ruslan Tsarni told the AP from his home in Maryland that he believed his former sister-in-law had a "big-time influence" on Tsarnaev's growing embrace of his Muslim faith and decision to quit boxing and school.

[142][154] Russell dropped out of college in the Spring of 2010 after she became pregnant in her junior year, and the couple married on June 21, 2010, in a 15-minute ceremony in a Dorchester mosque.

Dzhokhar Tsarnaev told the FBI that he and his brother had learned to make bombs by reading Inspire, but it was not clear who downloaded the files.