Former Minneapolis police officer Derek Chauvin has asked the state court of appeals to overturn his conviction for the 2020 murder of George Floyd.

Chauvin's attorney requested in an 82-page court document filed Monday that the appeals court reverse his conviction, grant him a new trial with a different venue, or return the case to a lower court for resentencing.

In April 2021, Chauvin was convicted of second-degree unintentional murder, third-degree murder, and second-degree manslaughter. He is currently serving a 22.5-year sentence behind bars.

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In a laundry list of complaints about Chauvin's original trial, his attorney, William Mohrman, argued that Chauvin was not granted a fair trial, as it was "structurally defective."

Some of the questions Chauvin's attorney asked the court to review included whether the jury should have been fully sequestered since selection, whether the venue should have been changed, or if the court should have delayed the trial.

"The courthouse was surrounded by barbed wire and soldiers during the trial," according to the filing. "Prior to jury deliberations, National Guard troops were deployed throughout Minneapolis, businesses boarded up their buildings and schools were closed 'bracing for a riot' in the event Chauvin’s acquittal. The jurors, because they were not sequestered, saw this every day."

His attorney also argued that jurors in the case expressed concerns for their personal safety in the event of an acquittal.

"The jurors concerns were not for their personal safety during the trial," according to the brief. "Rather, it was after the trial in the event of an acquittal when their identity became public as the Court told them."

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Bystanders captured video footage of Chauvin kneeling on Floyd's neck for more than nine minutes during an arrest in Minneapolis in May 2020 as Floyd repeatedly said he couldn't breathe. Floyd was later taken to a medical facility, where he was pronounced dead.