The FBI has expanded the search nationwide for missing Wisconsin teenager Jayme Closs, as 100 volunteers joined local search parties to scour the area around Barron for the 13-year-old.
A search for an "endangered" missing girl, whose parents were found shot dead in their home in the USA state of Wisconsin, has expanded nationwide as police struggle to find clues to her whereabouts.
"An entire state has been racked with Jayme's disappearance, and the death of her parents", Wisconsin state Attorney General Brad Schimel said in a statement.
This undated photo provided by Barron County, Wis., Sheriff's Department, shows Jayme Closs.
Both James and Denise Closs were long-time employees of the Jennie-O Turkey Store in Barron, Jennie-O's parent company Hormel said.
"I knew right away that I would need the expertise and manpower to investigate this crime and to search for Jayme and to bring her home". That's why those leads are so important'.
Volunteers continue the search for missing 13-year-old Jayme Closs.More news: At least 59 killed after train strikes crowd in India
What caused her parents' death?Authorities are following up on every tip they receive, including a tip that she was possibly sighted in Miami on Monday afternoon.
Hours earlier, Fitzgerald asked for 100 volunteers to help in the routine search for evidence that could be related to the case as the search for Jayme Closs entered its fourth day.
Deputies responding to a 911 call early Monday found Jayme's parents, James and Denise Closs, dead in their home in Barron, a rural community about 80 miles northeast of Minneapolis.
The FBI said Thursday that, "out of an abundance of caution", it was sending a digital Missing Person poster to local media partners across the country for display. About five minutes later, police found Denise Closs.
Jayme is described as standing 5-feet tall, weighing 100 pounds, with green eyes and blonde hair.
Investigators say they'll outline their plans later Friday.
Authorities know what cellphone made the 911 call, but Fitzgerald would not release that information Tuesday.