Security footage from a Georgia jail shows a Black detainee being assaulted by four guards.
The video, from inside Camden County Jail, shows deputies approaching Jarrett Hobbs in his cell before holding him down.
At least four guards can then be seen grappling with the inmate and throwing punches.
Sheriff Jim Proctor said he had reviewed the footage and ordered an investigation be launched “immediately”.
Federal court records say the jailers entered the cell because Hobbs was repeatedly kicking his door and refusing to stop.
Click here to sign up for our newsletters.