Earlier Thursday, the teen's adoptive father, Randall Pruitt, 41, was arrested and charged with rape, WKRN reported.
Jones said Thursday night the charge against Randall Pruitt was separate from the teen's disappearance, WATE reported. He is being held in the Monroe County Jail.
"We don't believe at this time he has any connection to her running away or missing," Jones told the television station.
Randall Pruitt is scheduled to appear in court Tuesday, the Knoxville News Sentinel reported.
Savannah Pruitt "had access to food and water" and "appeared to be doing fine," Jones told the newspaper. The sheriff would not comment on how the teen got to Wisconsin or who she was with when she was found, nor would he give information about her cellphone, the News Sentinel reported.
"I'm having to be vague in all my statements because this is still an ongoing investigation," Jones told the newspaper. “There’s the possibility of multiple other charges coming forward with multiple people involved. And truthfully that’s about all we can say at this time."