Dzhokar Tsarnaev Sentenced to Death Penalty for Boston Marathon Bombing

The 21-year-old bomber of the 2013 Boston Marathon in Boston, Massachusetts was sentenced to death on Friday by a federal jury following 15 hours of deliberation. 

A federal jury sentenced 21-year-old Dzhokhar Tsarnaev to death by lethal injection for his participation in carrying out the 2013 Boston Marathon attacks with two pressure cooker bombs that killed three and injured 264 in Boston, Massachusetts.

The jury, which took 15 hours to deliberate, is the same jury that found Tsarnaev guilty of all 30 charges related to the April 15 attack, including charges of conspiracy, use of a deadly weapon related to mass destruction, and murder.

One survivor of the terrorist attack, Karen Brassard, told the New York Times that she was "satisfied" with the jury's final decision to sentence Tsarnaev to death.

"Happy is not the word I would use," Brassard told the media outlet. "There's nothing happy about having to take somebody's life. I'm satisfied, I'm grateful that they came to that conclusion, because for me I think it was the just conclusion."

Brassard added to NBC News that the recent verdict will allow her and other victims of the terrorist attack to "breathe again."

"Once the verdict came in, it was like, okay, we can start from here and go forward and really feel like it's behind us," Brassard said.

While the defense for Tsarnaev had argued that the ringleader of the 2013 attack was Dzhokaar's older brother, Tamerlan, the prosecution argued that the 21-year-old suspect carried out a vicious and calculated attack against Americans as retribution for U.S. occupation in Muslim countries.