There is an update on the Spalding County SO FB page - I'm snipping the important bit:
Late Saturday night, Investigators spoke with Robert Earnest Peppers W/M 62, and Kelly Gail Osborn W/F 56 at their residence. While being questioned by Investigators, Peppers admitted to being the person who drove Mr. Warren’s vehicle and parking it behind the Dollar General. Osborn admitted she was following Peppers and picked him up after he dropped off the vehicle. Both were brought to the Spalding County Sheriff’s Office for interview, and a search warrant was executed on their residence.
Based on their interview, Investigators were able to locate a road and find the location where Mr. Warren’s vehicle had been pulled from a ditch and driven away by Peppers. Investigators, L.A.W.S. personnel and others were activated again and responded to that area along with STAR, and multiple K-9’s. During the search of the area a piece of mail belonging to Mr. Warren was found. Further interviews and information gathered led to the execution of a second search warrant on this residence this morning where items now known to be from Mr. Warren’s vehicle were recovered.
Both Peppers and Osborn are currently in custody at the Spalding County Jail and are being further questioned about their role and involvement with Mr. Warren. For now, they have been charged with theft by receiving stolen property.”
Mr. Warren still hasn't been located.