Former Columbus police officer Adam Coy was convicted last month of murder, reckless homicide and felonious assault for shooting and killing Andre Hill in 2020.
A judge delayed his sentencing while his attorneys request a new trial, to which prosecutors have objected.
During the trial, Coy's attorneys argued Coy made a mistake when he shot Hill, but claim it was a justified mistake.
Hill was holding keys in his hand and complying with Coy's orders when Coy shot him, thinking Hill had a gun.
The prosecution's use-of-force expert told the jury he didn't see the shooting as justified.
Coy's attorneys argued prosecutors knew of a use-of-force expert that would have testified that Coy was justified in shooting Hill, but dismissed the expert after discovering his opinion didn't line up with prosecutors.
Prosecutor Anthony Pierson responded in court documents that the expert only performed an incomplete surface review. Pierson stated he didn't know what the expert's impression of the shooting was when he went with a different expert.
Pierson said the defense attorneys had their chance to use their own experts and the conviction should stand.