Mississippi Authorities Clear Trooper in Choking of Handcuffed Black Motorist

Is this a just determination? Or should there be further investigation from an outside investigator?:

​The Mississippi Department of Public Safety said Friday that its internal investigation found no criminal conduct by a white Highway Patrol trooper who used physical force against a handcuffed Black man during an arrest — a confrontation caught on video by relatives of the man being arrested.

An investigation started after the relatives’ video of the Aug. 5 incident went viral. The footage showed the trooper putting a handcuffed man into a chokehold and wrestling him into a grassy ditch in a rural area near the south Mississippi city of McComb.