Timeline: A look at Tamerlan Tsarnaev's past

Posted: 04/22/13 at 10:55 pm EDT      Last Updated: 04/22/13 at 11:10 pm EDT

(CNN) -- Boston Marathon bombing suspect Tamerlan Tsarnaev, 26, died early Friday after a gunfight with police. Investigators are looking into his past for clues about last week's terror attack. Here's a look at some key dates, compiled from CNN's reporting and other media reports.

What we know about the suspects

October 21, 1986

Tamerlan Tsarnaev is born. His uncle, Ruslan Tsarni, says Tsarnaev was born into an ethnically Chechen family in Kyrgyzstan.

2001

The Tsarnaev family moves from Tokmok, Kyrgyzstan, to Dagestan, according to the state committee for national security of the Kyrgyzstan government.

Bombing suspect had video of Jihadist

Suspects' aunt questions evidence

"They lived here for a year, not the whole year. They arrived at the school in 2001 and departed in March 2002," a spokesman at a school the children attended in Makhachkala, Dagestan, told Russia Today, a Russian state-funded television network.

2002

Parents Anzor Tsarnaev and Zubeidat Tsarnaeva immigrate to the United States with their son, Dzhokhar. Their three other children -- Tamerlan Tsarnaev and two sisters -- stay behind in Kazakhstan with an uncle, his aunt told reporters in Canada this week.

July 2003

Tsarnaev, then 16, is in Turkey in July 2003 for 10 days on a Kyrgyz passport, a senior Turkish official says.

He comes to the United States that month, along with his two sisters, his aunt, Maret Tsarnaeva, told the Toronto Sun.

July 19, 2003

Tamerlan Tsarnaev first enters the United States through New York's JFK International Airport, a federal official says.

2003-2004; 2008-2010

Tsarnaev is registered to fight with USA Boxing, the organization that oversees amateur boxing in the United States, a spokeswoman says. Tsarnaev delivered pizza and held other jobs while boxing, his aunt said.

January 2004

In an interview with the Lowell Sun newspaper in Massachusetts, after winning a fight in a local boxing tournament, Tsarnaev says he grew up in Grozny, Chechnya, and moved with his family to the United States in 2003 in hopes of starting a new life. "I like the USA ... America has a lot of jobs. That's something Russia doesn't have. You have a chance to make money here if you are willing to work," he said at the time, according to the Sun. He also told the newspaper that he studied music at a school in Russia and played the piano and violin.

Fall 2006, spring 2007, fall 2008

Tsarnaev attends Bunker Hill Community College as a part-time student, a school spokeswoman says.

2008

Tsarnaev "got involved in religion," according to his mother. "Started following his own religion, never told me he could be on (the) side of jihad," Zubeidat Tsarnaeva told Russia Today.

April 2009

Tsarnaev is photographed training at Wai Kru Mixed Martial Arts in Boston for a university magazine story. The caption of one photo in a gallery describes Tsarnaev as a native of Chechnya and says he has been in the United States for five years. A quote attributed to Tsarnaev says, "I don't have one American friend. I don't understand them."

That same year, Tsarni says, he had a falling out with Tamerlan. "I got into really a state of shock from changes I heard, I wouldn't say I saw, I heard from Tamerlan," he told CNN. He recalled a 2009 phone conversation in which in response to some life advice he had given, Tsarnaev called him an "infidel." The young man also told his uncle he was not concerned about work or studies because God had a plan for him. According to his uncle, Tamerlan Tsarnaev's radicalization started in not in Chechnya, but in Cambridge, Massachusetts, at a local mosque.

May 4, 2009

Tsarnaev competes at 201 pounds in the 2009 Golden Gloves Tournament of Champions in Salt Lake City, losing in the first bout.

July 28, 2009

Tsarnaev is arrested, accused of domestic abuse and battery after allegedly assaulting his girlfriend, according to Cambridge Police Department records.

2010

Tsarnaev wins a local heavyweight boxing title. "He said he'd gotten married and had a little baby. He was a very nice guy," said Gene McCarthy of the Somerville Boxing Club in Massachusetts. "I brought him to the registration, and while he was waiting in line, he saw a piano and was playing classical music like it was Symphony Hall."

June 21, 2010

Tsarnaev and Katherine Russell are issued a marriage license by the city clerk in Cambridge, Massachusetts. An attorney for Russell's family, Amato DeLuca, told CNN that the couple have a 2-year-old daughter, whom Tsarnaev cared for while Russell worked long hours as a home health aide.

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