Boston Bomber

A moment of silence will be observed at 2:49 p.m. ET, the time when the first of two devastating bombs went off in the crowds gathered to watch the marathon in 2013.

The twin bombings in 2013, carried out by Dzhokhar Tsarnaev with his older brother, Tamerlan, killed three people and left 264 others wounded. Seventeen of the counts can carry the death penalty.

Dzhokhar Tsarnaev's conviction is almost certain — given his lawyer acknowledged he participated in the deadly 2013 attack. If he is convicted, the jury will decide if Tsarnaev should be executed.

Jury selection begins today, and because the bombings affected so many people, this part of the trial may take weeks.

The twin bombings of 2013 cast a long shadow on Monday's race. But the crowds basked in the sunshine today, as American Meb Keflezighi ended a 31-year drought for U.S. men in the Boston Marathon.

More than 36,000 runners and an estimated 1 million spectators are going to be on and along the streets for the 118th marathon — the first since last year's bombings.

Dzhokhar Tsarnaev, prosecutors argue, committed the offenses in a "heinous, cruel and depraved manner." They say he betrayed his country and showed no remorse, and that's why they're seeking the death penalty.

The first lady also invited former NBA center Jason Collins, the first active player in the four major American team sports to come out.

A doctor's testimony about Dzhokhar Tsarnaev's condition was released this week. The 20-year-old has pleaded not guilty to charges related to the Boston Marathon bombings and the murder three days later of a MIT police officer.

Attorneys from the Tampa Bay region are representing the father of a Chechen man who was fatally shot while being questioned by law officers about ties to…

Dias Kadyrbayev and Azamat Tazhayakov, former classmates of Dzhokhar Tsarnaev's at the University of Massachusetts, are accused of throwing out a laptop and other items that could link Tsarnaev to the bombings.

Appearing in the same Boston federal courtroom as many of the victims of the bombings at the Boston Marathon, Dzhokhar Tsarnaev pleaded not guilty to 30 counts Wednesday, including using a weapon of mass destruction in the bombings, which killed three people and wounded more than 260.