"We want to bring Jayme home", Sheriff Chris Fitzgerald said Wednesday, noting the girl is not considered a suspect in her parents' deaths.
James Closs, 56, and Denise Closs, 46, died of gunshot wounds at their home early Monday at 1268 USA 8 west of Barron, and Fitzgerald has ruled it a homicide.
Fitzgerald said deputies arrived less than four minutes after a 911 call.
Fitzgerald said investigators still have a "100 percent expectation that she's alive", but that even though they've received more than 400 tips, none have been of a credible sighting.
Fitzgerald said the public should be mindful of someone who missed work suddenly; missed scheduled appointments; suddenly left town without a reasonable explanation; changed appearance; is acting anxious, nervous, or irritable; or is paying an unusual amount of interest - either too much or too little - to the progress of the Closs investigation.
The mutual aid agreement is set up by state statute so that whenever a law enforcement agency needs help, they can put out a request and grant officers from other areas full police power under their jurisdiction.
Deputies responded to the house where they found James and Denise dead from gunshot wounds. "She was a quiet girl", he said.
He said no one was communicating to the dispatcher on the 911 call but "some kind of disturbance could be heard". The sheriff has said authorities know whose cell phone made that call, but they have not released that information. As of Monday, police wouldn't say much about the crime scene, just that the weapon used was a gun. I don't know that answer.
"We ask that you continue to respect the privacy of our students, staff and the family of Jayme Closs", Fitzgerald wrote. That's why those leads are so important'.
Furthermore, investigators believe Closs was present at the time of their deaths, and believe that she is still in danger.
"It was just, "bang" and 'bang, '" Smrekar said. "I think there was a need for people to come together", said the attendee.
Jayme Closs is 5 feet tall, weighs 100 pounds and has green eyes and blond or strawberry blond hair, the sheriff's department said. And if anyone had information about Jayme Closs' whereabouts to call its tip line at 1-855-744-3879.
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.