Tyson died from his injuries after being taken to DeKalb Medical Center.
Williams, the DeKalb sheriff’s office spokeswoman, said details about the incident were being withheld pending the police department’s investigation.
Jail records showed a new murder charge was added to Wyatt’s docket on Saturday. He was previously charged with murder, burglary and theft by taking in DeKalb County, as well as aggravated assault and theft by taking in Henry County.
DeKalb County Sheriff Jeff Mann said in a statement Saturday’s incident was his jail’s first inmate homicide “in more than five years.”
“However,” he added, “this does not lessen the tragedy of the situation, and we extend our sincerest condolences to Mr. Tyson’s family as we look into what may have caused his death.”