BOSTON (AP) — Boston Marathon bomber Dzhokhar Tsarnaev has been sentenced to die by lethal injection for the 2013 terror attack.
The federal jury in Massachusetts reached the decision Friday after more than 14 hours of deliberations over three days.
The 21-year-old Tsarnaev was convicted last month of all 30 federal charges against him, 17 of which carried the possibility of the death penalty.
The jury found that Tsarnaev committed 11 of 12 aggravating factors that prosecutors said supported a sentence of death.
Among the aggravating factors they say the government proved was that he targeted an iconic event that draws large crowds, which makes it especially susceptible to terrorism.
The only one they ruled the government hadn't proved was that Tsarnaev made statements suggesting that others would be justified in committing additional acts of violence and terrorism against the U.S.
As for mitigating factors presented by the defense, only three of 12 jurors found that Tsarnaev would not have committed the crime but for his older brother, Tamerlan.
U.S. Attorney Carmen Ortiz saysTsarnaev will pay for his crimes with the death sentence he received.
Ortiz spoke at a news conference Friday, hours after the sentence was read.
She says, "Today the jury has spoken. Dzhokhar Tsarnaev will pay for his crimes with his life."
BostonPolice Commissioner says the verdict sends a message.
He says, "The message if we're not going to tolerate terrorism in this country. We're not going to see someone blow up our marathon, blow up our city."
The bombing killed three people and injured more than 260 others. Tsarnaev killed a Massachusetts Institute of Technology police officer days later.
The defense sought to save Tsarnaev's life by pinning most of the blame on his radicalized older brother.
But prosecutors portrayed Tsarnaev as an equal partner in the attack and so heartless he placed a bomb behind children, killing an 8-year-old boy.
A judge has not yet set a date for Tsarnaev's formal sentencing, when he and the victims will be allowed to speak.