Jayme had been missing since October 15, when police discovered someone had broken into her family's home in Barron, killed her parents and apparently abducted her.
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.
Officials believe the 21-year-old killed the teenager's parents in order to kidnap her.
The sheriff's department in Barron County was to release more information Friday after describing the investigation as "very fluid and active" following the suspect's arrest.
A 13-year-old American girl, missing for nearly three months after her parents were shot dead at their home in the US Midwest, has been found alive with her hair matted and wearing oversized shoes.
"For 88 days I have said we would work tirelessly to bring Jayme Closs home".
Barron Mayor Ron Fladten said on Thursday night he had not heard any details about Closs's discovery yet but was overjoyed at learning she is alive.
'I hope that she's in good shape, ' the mayor said. I don't know where I am.
Authorities say she was found just after 4:30 p.m., and the suspect was arrested just ten minutes later.
The only differences that Kasinkas could see were that Closs looked thinner "than her photograph" and exhausted.
Sheriff Fitzgerald said he was not sure whether Mr Patterson and Jayme knew each other.
Jayme had made her way to a neighborhood in Gordon, Wisconsin, where she found someone who could call for help.
Patterson, the suspect, is being held in the Barron County jail on suspicion of kidnapping and homicide in the murder of Jayme's parents. Deputies say shortly after, a suspect was taken into custody.
Barron County Sheriff Chris Fitzgerald said Mr Patterson has no criminal history in the state of Wisconsin. Details of what happened in the almost three months since the girl vanished remain unclear, he said, though he said Patterson "took many proactive steps to hide his identity from law enforcement and the general public".
Douglas County is just north of Barron County, where Closs lived. After she was found, she was taken to the hospital, examined and held overnight for observation.
December 12, 2018 - Hundreds of people attend a "tree of hope" lighting ceremony in honor of Jayme in Barron.
"I'm going to hug her. Squeeze her", Naiberg told the Star-Tribune. "It's the news we've been waiting on for three months".
Kasinskas said she taught Patterson science in middle school, but added: "I don't really remember a ton about him".