Former US police officer Derek Chauvin, who was sentenced to more than 22 years in prison for the murder of African-American bouncer George Floyd, is demanding a new trial or the conviction overturned.
The 46-year-old's attorney, William Mohrman, based the appeal in a Minnesota court Wednesday on publicity during the criminal trial two years ago.
The reporting violated Chauvin's constitutional right to a fair trial.
A jury found the former officer guilty of murder with conditional intent in the spring of 2021.
A year earlier, he had kneed Floyd on his neck for nearly nine minutes while attempting to arrest him.
A video of the operation caused a stir internationally.
In the weeks that followed, Floyd's words, "I can't breathe," became the rallying cry of the Black Lives Matter movement protesting police brutality across the United States.
Chauvin was later sentenced to an additional 21 years in prison at another trial for violating Floyd's civil rights.
The former police officer is now serving his sentence concurrent with 22 years for murder in an Arizona prison.