Patterson is being held on homicide charges for the murder of Jaymes parents, as well as kidnapping.
Here's what we know about the case:
Jayme Closs went missing in the early morning of October 15
Before her disappearance, Jayme was last seen at a family party on October 14.
The Barron County Sheriff's Department received a call from Jayme's mother at 12:53 a.m. on October 15.
Responding deputies found the Closs family home's door kicked in, and Jayme's parents, Denise and James, were found dead from gunshot wounds.
Jayme, who police ruled out as a suspect in the killings, was missing from the home, and authorities believed she was in danger.
The teen's parents' deaths have been ruled a homicide, though no murder weapon was found at the scene.
Authorities received thousands of tips in the months Jayme was missing
When Jayme first went missing, the Barron County Sheriff's Department described her as likely abducted, after her parents were found dead.
Authorities released vague descriptions of two vehicles of interest, that might have been in the area of Jayme's home the the night she disappeared, according to KSMP .
The cars were believed to be a red or orange Dodge Challenger and a black Ford Edge or Acura MDX.
The vehicle descriptions and other leads, however, did not lead investigators toward any clues as to where Jayme was.
Jaymes aunts pleaded for information about the teen
Jennifer Smith said that she missed Jayme's giggles, and held up the teen's favorite iced coffee for the cameras.
"Jayme, not a moment goes by that we're not thinking of you and praying for you," Smith said. "We need you here to fill that hole in our hearts. We will never stop looking for you."
Smith and another aunt brought Jayme's pet dog to the news conference.
"Your dog, Molly, is waiting for you. She's sleeping in one of your sweatshirts," Smith said.
Jayme escaped from a cottage in Gordon, Wisconsin, on Thursday
Residents of Gordon told The Star Tribune that Jayme was skinny, dirty and wearing shoes too big for her feet when she was found by a woman walking her dog and asked for help.
Jayme had also reportedly banged on a neighbor's door and said "This is Jayme Closs! Call 911!"
Kristin Kasinskas, brought Jayme into their home, where Jayme told her and her husband, Peter, she didn't know where she was or anything about the town.
Kasinskas told The Associated Press on Friday that Jayme told her that she did not know why she was targeted, only that Patterson killed my parents and took me.
Kasinskas, a middle school science teacher, said she remembered Patterson being very quiet as a student, but didnt know him very well as a neighbor.
She said she didnt see Patterson in the three months that Jayme was missing.
The Douglas County Sheriff's Office confirmed that Jayme was found at 4:43 p.m. on Thursday, and a suspect was taken into custody 11 minutes later, according to The Associated Press .
A 21-year-old from Gordon, Wisconsin, was taken into custody on Thursday
Barron County Sheriff's Department
Police received thousands of tips in the months following Jaymes disappearance, but it wasn't until she escaped the home that a suspect was revealed, when Jayme described his vehicle to police, Barron County Sheriff Chris Fitzgerald said at a press conference on Friday.
Fitzgerald said police were quickly able to find the vehicle, and arrested Patterson, who is now being held in a Barron County jail on homicide and kidnapping charges.
Fitzgerald said that Jayme appeared to be the only target in the kidnapping, and that investigators believe Patterson had no contact with Jayme's parents. It remains unclear why Jayme was targeted.
Investigators believe Patterson killed Jayme's parents because he wanted to abduct the teen, Fitzgerald said.
Patterson, who has no prior criminal history in Wisconsin, had taken steps to hide his identity from the public as a search for Jayme carried on, Fitzgerald said.
When Patterson was arrested, he was found hiding in the home he grew up in, at a residence down the street from where Jayme was found, according to the Milwaukee Journal Sentinel .
Jaymes family celebrated the news she had been found
Sue Allard, Jayme's aunt, told the Star Tribune that she could barely express her joy after learning the news Thursday night.
"Praise the Lord," Allard said between sobs. "It's the news we've been waiting on for three months. I can't wait to get my arms around her. I just can't wait."
