He will be resentenced, but only on the manslaughter conviction.
It's not clear if Noor will appeal to the Minnesota Supreme Court.
He was sentenced last month for the murder of Justine Damond.
Noor was found guilty of murder in the shooting death of Justine Damond.
It comes shortly after his office successfully prosecuted former police officer Mohamed Noor.
The 40-year-old was killed by a city police officer, who was found guilty of murder.
The 10-person jury began deliberations Monday afternoon.
Former police officer Mohamed Noor is charged in her killing.
Journalists and media outlets are "vehemently" opposing the judge's ruling.
The former Minneapolis officer pleaded not guilty in the killing of Justine Damond.
The move was revealed in a court filing released Friday.
Prosecutors say police trainers and psychiatrists had raised red flags about the officer.