Deputies discovered Jayme Closs' parents shot to death in their home in rural Barron early Monday.
Since Monday authorities have received over 1,000 tips and conducted hundreds of interviews in the search for Jayme, Barron County Sheriff Chris Fitzgerald said Friday.
In the news conference, the sheriff also revealed for the first time that evidence shows Jayme was at the home at the time of the slayings, but he did not reveal that evidence beyond mentioning the 911 call.
Authorities have said they believe Closs was home at the time of her parents' deaths.
He said that even though they've received more than 800 tips, none have been of a credible sighting.
"Nothing of evidentiary value has been recovered", the Barron County Sheriff's Department said in a Thursday statement.
Volunteers and law enforcement combed the sides of United States 8 - the road where the Closs' home is located - on Thursday, looking for evidence. They found a man down and several spent shells; the front door had been kicked in.
An FBI insider has said that murders of two parents of a Wisconsin teen was a targeted attack and not a random killing.
He added that "Jayme is out there and we want to find her".
Santorum Criticizes Trump's Gianforte Praise: 'This Is Not Helpful, It's Not Good'
Trump was speaking at a rally in Missoula, Mont., where the president was campaigning for a Republican challenger to Sen. Trump said he was afraid Gianforte would lose after the moment, but then recalled, "Wait a moment, I know Montana".
Fitzgerald said Jayme is described as sweet and shy. I don't know that answer. No one on the line talked to the dispatcher, but the dispatcher could hear a disturbance, authorities said. That's why those leads are so important'.
Her parents, James and Denise Closs, were both longtime employees at the Jennie-O Turkey Store in Barron, where a turkey hatchery and processing plant are located, according to the Minneapolis Star-Tribune.
The sheriff told CBS News correspondent Adriana Diaz that they've identified whose cell phone the 911 call came from.
"Unbelievable, its just something that doesn't seem to happen in our area", said Harold Lehman.
Fitzgerald said additional agencies, including the Federal Bureau of Investigation, are involved.
Jayme and her mother attended a family birthday party together on Sunday afternoon while James Closs was at work, Jayme's grandfather told the Associated Press.
Jayme Closs is 5 feet tall, weighs 100 pounds and has green eyes and blonde or strawberry hair.
Anyone with information regarding Closs' whereabouts or who may have had contact with her is asked to contact the Wisconsin Department of Justice Child Abduction Response Team tipline at 1-855-744-3879.