Jury selection in Boston Marathon trial begins today

Jury selection for the trial of Dzhokhar Tsarnaev, accused in the Boston Marathon attacks, begins today.

Those chosen will decide whether Tsarnaev planned and carried out the twin bombings that killed three people and injured more than 260 near the finish line of the race on April 15, 2013.

If they find him guilty, they will decide whether he should be put to death.

It's perhaps the most closely watched federal death penalty case since Timothy McVeigh was convicted and executed for the 1995 Oklahoma City bombing.

Tsarnaev's lawyers tried in vain for months to get the trial moved, arguing the Boston jury pool was tainted because of the number of locals with connections to the race. They drew parallels to the McVeigh case, which was moved for similar reasons.

Jury selection is expected to take several weeks because of extensive media coverage. The process also could be slowed if potential jurors express objections to the death penalty.

Some legal observers say Tsarnaev's lawyers, facing powerful evidence against him, will probably focus their energies on the penalty phase, when they could present mitigating evidence to spare his life.

Prosecutors say 21-year-old Dzhokhar and his brother, Tamerlan Tsarnaev ethnic Chechens who had lived in the United States for about a decade carried out the bombings as retaliation for US actions in Muslim countries.

They are also accused of killing a Massachusetts Institute of Technology police officer. Tamerlan, 26, died after a firefight with police several days after the bombings.

Dzhokhar was captured later that day, wounded and bloodied, hiding inside a boat stored in a suburban yard. Prosecutors said he described a motive in a note written in the boat, "The US Government is killing our innocent civilians" and "We Muslims are one body, you hurt one you hurt us all."

Tsarnaev's lawyers may lay the groundwork for some kind of mental health explanation, said Christopher Dearborn, a professor at Suffolk University Law School.

That could include any persecution his family might have suffered as ethnic minorities in Kyrgyzstan, where the brothers spent most of their lives before moving to the US with their parents and two sisters.

"I think the real value in that may be to start to try to generate even a little bit of empathy around this and humanize the kid a little bit, hopefully enough to save a life," Dearborn said.