Boston Marathon Bomber Dzhokhar Tsarnaev Sentenced to Death By Lethal Injection

A federal jury sentenced Boston Marathon bomber Dzhokhar Tsarnaev to death by lethal injection.

Watch: What Really Happens When a Pressure Cooker Bomb Explodes.

After 14 hours of deliberation the jurors rejected the defense's argument that he had been pulled in to the plot by his older brother. Tsarnaev's lawyers are expected to appeal the sentence. 

Read: Boston, A City Under Siege.

Last month, a jury of seven men and five women deliberated for more than 11 hours over the course of two days and found the 21-year-old guilty of all 30 counts in the bombing. That verdict comes a week before the second anniversary of the bombings.

The New York Times reported, “It was the first time a federal jury had sentenced a terrorist to death in the post-Sept. 11 era, according to Kevin McNally, director of the Federal Death Penalty Resource Counsel Project, which coordinates the defense in capital punishment cases.”

U.S. Attorney General Loretta E. Lynch called the death sentence a “fitting punishment.”

Following the announcement, U.S. attorney Carmen Ortiz spoke at a press conference.

She said, “Our goal in trying this case was to ensure that the jury had all of the information that they needed to reach a fair and justice verdict. We believe we accomplished that goal.”

She continued and said, “Even in the wake of horror and tragedy, we are not intimidated by acts of terror or radical ideals. On the contrary, the trial of this case showcased an important American ideal – that even the worst of the worst deserve a fair trial and due process of law.”

Watch Below: Boston Bomber Dzhokhar Tsarnaev Found Guilty