The Boston Marathon bomber death penalty trial wrapped up on Wednesday as lawyers on both sides of the case gave their closing statements.

Now, it's up to the jury to decide whether convicted terrorist Dzhokhar Tsarnaev should face death or life in prison for his role in the 2013 Boston Marathon bombings.

Last month, the 21-year-old bomber was found guilty of 30 charges, including conspiracy to use a weapon of mass destruction and bombing a public place. The charges also covered a carjacking that took place in the aftermath of the attack, the deadly shooting of a Massachusetts Institute of Technology police officer, and a gunfight in Watertown, Massachusetts, in which Tsarnaev and his now-deceased brother tossed explosives at police.

During the four-month trial, the defense team argued that Tsarnaev participated in the attack, which killed three people and injured more than 260 others on April 15, 2013, because he was under the influence of his older brother, Tamerlan. The defense also portrayed Tsarnaev as a normal and impressionable teenager who was a pawn in his brother's radical scheme.

On Wednesday, prosecutors countered that narrative, telling jurors that the young defendant lacks remorse for his action and deserves "a sentence of death," reports The Boston Herald.

Prosecutor Steve Mellin said it was Tsarnaev's goal to cause his victims as much physical pain as possible in order to make a political statement.

"The bombs burned their skin, shattered their bones and ripped their flesh," Mellin said. The bombing "disfigured their bodies, twisted their limbs and punched gaping holes into their legs and torsos."

"Merely killing the person isn't nearly as terrifying as shredding them apart," he added.

Following the attack, Mellin said Tsarnaev showed no regret by nonchalantly making a purchase for milk 20 minutes later.

"He acted like it was any other day. He was stress-free and remorse-free," Mellin said. "He didn't care because the death and misery was what he sought that day."

On the other hand, Judy Clarke, the lead defense attorney, gave a 75-minute closing statement, claiming that Tsarnaev regrets his "senseless and catastrophic acts," reports The New York Times. She also said that he showed the potential for redemption.

The presiding judge in the case, Judge George A. O'Toole Jr., then spent 90 minutes giving technical instructions to the jurors on how to arrive at their decision. He also told jurors that their two options are to either sentence Tsarnaev to life in prison without the possibility of release or the death penalty.

The jury was expected to begin its deliberations on Wednesday.