Police have been searching for 13-year-old Jayme Closs ever since authorities arrived at her family's Barron, WI home early Monday morning and found her parents, 56-year-old James Closs and 46-year-old Denise Closs, dead inside.
On Thursday, 100 volunteers helped law enforcement comb through fields in Barron, Wisconsin, which is about 90 miles northeast of the Twin Cities.
Barron County Sheriff Chris Fitzgerald Tuesday said Closs is not a runaway and is not a suspect in her parents' deaths.
Officials said previously that the 911 call, which came in around 1 a.m., prompted a police response to the home, where they found the bodies of James and Denise Closs. "We are also hopeful for the safe return of their daughter, Jayme, and are keeping her and the Closs family in our thoughts".
Authorities have fielded more than 400 tips relating to Jayme's potential whereabouts so far.
One of those behind the effort, Michelle Saffert, said he children and Jayme "have spent a lot of time growing up". Jayme Closs is 5 feet tall, weighs 100 pounds and has green eyes and blonde or strawberry hair. Their deaths have both been ruled homicides.
"We believe Jayme was home based on the evidence in our case - some of it from that 911 call, and some of it is still part of the active investigation and we're not able to comment on why we believe that", he said at Wednesday's news conference.
Furthermore, investigators believe Closs was present at the time of their deaths, and believe that she is still in danger. Closs, a missing teenage girl, could be in danger after two adults were found dead at a home in Barron, Wis., on October 15, 2018.
"We could hear yelling in the background on this 911 call", Fitzgerald, the sheriff, said Tuesday on NBC's "Today" show.
Fitzgerald said there were no suspects in the case. "We've received no other threats or anything in the local area to say it was just a random act, but we do not know that answer", he said.
"Often, someone in the community will have knowledge of a crime and may not realize it", he said. Meanwhile, authorities say they've gotten more than 200 tips following an Amber Alert that was issued Monday afternoon. Anyone with information is asked to call the tip line at 1-855-744-3879.