Man convicted in 2019 slaying of Biloxi officer sentenced Suspect convicted in 2019 slaying of Biloxi Police officer Robert McKeithen By Bill Snyder and Lindsay Knowles | February 24, 2021 at 12:03 PM CST - Updated February 24 at 5:59 PM BILOXI, Miss. (WLOX) - One of the men involved in the ambush and murder of a Biloxi police officer will spend the next seven years in prison for his part in the crime. Dalentez Brice was sentenced to 15 years on Wednesday after being convicted last year of accessory after the fact in the shooting death of Officer Robert McKeithen. Dalentez Brice was sentenced on Wednesday, Feb. 24, 2021, for accessory after the fact in the murder of Biloxi Police Officer Robert McKeithen. (Source: Harrison County Sheriff's Dept.)