Hanna Bogorowski | Reporter

The Boston Marathon bombers lawyers are asking the court to overturn their clients conviction and death penalty, arguing the case was tainted ever since a lower court judge refused to move the case to another city that wasnt as closely affected by the 2013 bombing.

The case surrounds Dzhokhar Tsarnaev, 25, who is, along with his deceased brother, responsible for carrying out an attack on April 15, 2013, in which two homemade pressure cooker bombs were placed near the finish line of the Boston Marathon.

The attack killed three and wounded more than 260 others. Massachusetts Institute of Technology police officer Sean Collier was killed in an incident related to the brothers after the bombing.

Tsarnaevs lawyers, who acknowledge the young man carried out the attack, argued in a brief filed with the 1st U.S. Circuit Court of Appeals in Boston that a previous judges refusal to move the case to a different city resulted in jury members who cant be unbiased.

The lawyers also argued the constant negative media coverage after the attack affected the jury and prevented Tsarnaev from receiving a fair trial.

BOSTON, MA – JULY 10, 2013: In this handout image of security footage provided by the United States Attorneys Office, Boston Marathon bomber Dzhokhar Tsarnaev is seen giving the middle finger to a security camera inside his jail cell three months after he was arrested in the terror attack July 10, 2013. (Photo by United States Attorneys Office via Getty Images)

“The pre-trial publicity was damning: the more a prospective juror had seen, the more likely she was to believe that Tsarnaev was guilty and deserved the death penalty,” the lawyers wrote in their brief, according to Reuters.

Tsarnaevs lawyers have tried to argue their client, who was 19 at the time of the attack, was a “junior partner” to his older brother by trying to convince the jurors the older brother had a history of violent attacks and embraced radical Islam. (RELATED: Report: Terrorist Exploit Food Stamps To Fund Domestic, International Attacks)

U.S. District Judge George OToole prevented the defense from revealing to the jurors Tsarnaevs brothers ties to a 2011 triple murder, the lawyers said.

Tsarnaevs brother was killed four days after the bombing in a gunfight with police after the younger Tsarnaev ran him over with a stolen vehicle.

The jury decided Tsarnaev deserved the death sentence after he was found guilty of 17 capital charges.

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