Willow Long, 7, of rural Effingham County, Illinois, has been missing since Sunday.
- "Maybe she wanted to go on this adventure," an official says
- She was watching TV right before she disappeared
- More than 300 volunteers have helped search for Willow
- Sheriff: "We have one goal; that is to find Willow"
(CNN) -- Police don't suspect foul play in the disappearance of 7-year-old Willow Long from a rural Illinois home over the weekend. But they're wondering if the movie she'd been watching at the time may have something to do with it: Disney's "The Princess and the Frog."
"We were thinking maybe she wanted to go on this adventure," said J.R. Nieman of the Watson fire department. "So we have checked bodies of water."
Willow was watching television with her brothers on Sunday when her mother, who wasn't feeling well, laid down for a nap. When she woke up, her daughter had vanished.
When she asked her 3-year-old son where her daughter was, he pointed to the front door.
Willow disappeared sometime between 9 a.m. and 10:15 a.m. The second grader left her glasses at home.
Willow evidently changed clothes before leaving her house. Police said the clothes her mother described her wearing when she last saw her were found in the family home.
Officials have covered about 18 square miles as of Monday evening, telling reporters in a news conference, "We want to make sure we cover everything."
There are several agencies helping with the search including the FBI, Effingham County Sheriff's Office, the Watson Police and the Illinois State Patrol. No Amber Alert has been issued for Willow, since foul play is not suspected.
Search dogs initially picked up trails around the family property, but there have been no other leads.
More than 300 volunteers have been helping to "double and triple search" as much of the area as possible, which is a mostly rural landscape.
The heat wave across the region has not helped; multiple volunteers have been taken to the hospital with symptoms relating to heat exposure, authorities said.
The volume of volunteers, while inspiring, has caused some confusion.
"There were some city folks that got lost in a corn field," one volunteer told CNN affiliate WICS. "They kept turning when the corn rows turned instead of walking straight through the field."
The heat has also caused complications with the thermal imaging technology that officials are using.
"We've had several planes and helicopters trying to find Willow," Effingham County Sheriff John Monnet said Monday. "But the fields are so hot that it's become harder to pinpoint the glow of body heat."
But investigators remain determined; "We have one goal; that is to find Willow".
Willow Long has shoulder-length red hair, is about 4 feet tall and weighs about 50 pounds.
And this was the update as of 5:24 am
Body Found in Search For Missing Illinois Girl
EFFINGHAM, Ill. (KMOX) - A child’s body has been found by volunteers searching the village of Watson, Illinois in search of a missing girl.
The office of Effingham County State’s Attorney Bryan Kibler said in a press release that four volunteer searchers “located the body of a small child” south of Watson around 7:30 p.m. Monday night.
“No positive identification of the body has been made at this time. An autopsy to determine the child’s identity and cause of death is scheduled for later this morning,” the office said in a release.
Willow Long, 7, had been on a couch watching television with her younger brother on Sunday morning. When her mother returned to the room, only Willow’s brother was on the couch.
When asked where Willow had gone, her brother pointed to the door but didn’t speak.
The young girl’s mother called police immediately and police said Monday there was no indication of foul play.
In the statement Tuesday morning, the state’s attorney’s office said Illinois State Police and the Effingham County Sheriff’s Department continue to search for Willow. However, the Sheriff’s Department later announced that it was deconstructing its command center and calling off the search.
Hundreds of volunteers and first responders combed a 20-mile area around Willow’s home Sunday and Monday. An infrared camera was used Monday night.