He wrote that he had no additional details to report, but has scheduled a news conference for 10 a.m. Friday in Barron.
A 13-year-old Wisconsin girl who went missing in October after her parents were shot dead has been found alive.
Jayme Closs has been located. Law enforcement agencies across the country are put on alert as the case makes national news.
Hours earlier, Sheriff Fitzgerald was quashing internet rumors that a heavy police presence in Walworth County, in southeastern Wisconsin, was related to the Closs investigation.
Jayme Closs was taken from her home in Barron, Wisconsin on October 15, after the teenager's parents were shot dead in their home. "We also could not have endured this case without the support of the public and I want to thank them for all the support and help".
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Jayme was skinny and dirty, wearing shoes too big for her feet, but appeared outwardly OK when she was discovered Thursday afternoon near the small town of Gordon, the neighbors said. She said the family is focused on supporting Jayme.
"I honestly still think I'm dreaming right now. Jayme has been found!", Kroeze posted.
The Minneapolis Star Tribune, citing "a source with knowledge of the investigation", reported Thursday night that Jayme had "escaped from a home in rural Gordon and approached a neighbor, identifying herself and saying she'd been kidnapped, and asked the neighbor to call 911". "You just have to get up every day and keep that hope alive and stick together as a family and pray that everything is going to work out", said Tom Allard, a family member.
The sheriff previously said his office was receiving around 25 tips per day regarding Closs' disappearance.
Both Jayme and Denise have been described as quiet, kind, religious and giving, an example of how a loving mom raised her daughter with her own good values.
On Oct. 15 an inaudible 911 call led police to Jayme's home in Barron, which is about 90 miles northeast of the Twin Cities.