Lawyers for convicted Boston bomber Dzhokhar Tsarnaev have filed a motion for a new trial.

NECN reported that the motion was filed Monday in a U.S District Court in Boston. In a statement, the District Court explained why Tsarnaev's lawyers wanted a retrial, stating, "A new trial is required in the interests of justice and judgments notwithstanding the verdict are required as a matter of evidentiary insufficiency."

According to ABC News, the motion was filed two weeks after Tsarnaev was sentenced to death on June 24, for his role of the Boston Marathon bombing in 2013. The bombing killed three people and injured 260 others.

Tsarnaev is currently in the Federal Correctional Institution in Florence, Colorado. The Colorado penitentiary is the infamous "supermax" prison where many of America's worst criminals, including several terrorists, are serving life sentences. The supermax is one of several other correctional facilities at the site in Florence. If the courts decide not to have a retrial, then Tsarnaev will have his fate sealed at the U.S. Penitentiary in Terre Haute, Indiana.

Life in prison for Tsarnaev has been a roller coaster ride. The New York Daily News reported Tsarnaev was laughing at the security measures during a visit from his sisters last March. He allegedly was joking about how bad the security measures was in prison. Defense attorneys stated, "Apparently, if Mr. Tsarnaev appears to be lighthearted in interactions with his sisters, this will be spun into an argument that he should be executed because he lacks remorse and is insufficiently serious about his predicament or his actions."