Trent Tetzlaff, USA TODAY NETWORK-Wisconsin 
 
 Jayme Closs (Photo: Courtesy of the Barron County Sheriff's Department) 
 
 BARRON, Wis. — A 100-person search party and some 800 tips still have not led Barron County authorities to Jayme Closs, a 13-year-old girl missing since her parents were found shot to death in their home early Monday. The FBI said it considered the girl “endangered.” 
 
 Police officers located the bodies of James Closs, 56, and Denise Closs, 46, at their home in Barron County on Monday, dead of apparent gunshot wounds, after a 911 call was placed. The FBI announced on Thursday it was expanding its search for Jayme, who was described as 5 feet tall and 100 pounds, with blonde hair and green eyes.  (CNN) Volunteers and law enforcement combed the side of a highway on Thursday looking for evidence in the disappearance of a missing Wisconsin teenager whose parents were found dead in their home this week. Thursday's search took place about 3 miles from the family's home, according to CNN affiliate WCCO 
 
 Since authorities received a cryptic 911 call and discovered the bodies of Jayme's parents in their home near the town of Barron early Monday, investigators have received more than 800 tips and have not confirmed any credible sightings of the girl. On Thursday afternoon, Barron County Sheriff Chris Fitzgerald posted a plea on Facebook for 100 "able-bodied volunteers" to help in the search for evidence related to her disappearance. “We believe Jayme was in the home at the time of the homicides, and we believe she’s in danger,” said Fitzgerald, according to CNN.
– "Every second counts" in the search for Jayme Closs, and authorities say they've so far received about 800 tips on the disappearance of the Wisconsin teen. The 5-foot-tall 13-year-old with strawberry-blond hair and green eyes was found to be missing early Monday when cops responded to a 911 call at her Barron home; her parents were found there shot to death. In addition to hundreds of tips being called in, USA Today notes that a team of 100 volunteers, recruited on Facebook by Barron County Sheriff Chris Fitzgerald, has been scouring the area in a "routine search for articles of evidentiary value." The hunt for Jayme—who Fitzgerald seems certain is still alive, per CNN—isn't just in Barron: CBS News and Newsweek report the FBI has expanded the search nationwide, with the agency placing Jayme on its top missing-persons list and blasting out a missing-persons poster "out of an abundance of caution" to media across the country. More than 100 local and state FBI agents are said to be helping to find her. "At the end of the day, I want a 13-year-old here safe and sound," Fitzgerald said Wednesday. "That's our goal. That's our only goal right now." (So far, not much has turned up.)