As search crews continue looking for any trace of Tibbetts in rural Brooklyn, IA, her family is begging people with information to come forward.
The day after police in Kearney, Missouri shared information about a possible sighting of missing Iowa student Mollie Tibbetts, investigators said it was not her after all.
Richard Rahn, special agent in charge of the Iowa Department of Public Safety's Division of Criminal Investigation, said data from Tibbetts' FitBit, a GPS-enabled activity tracker, has been "helpful" and could be "key" in locating her.
Authorities plan to update the investigation and will provide more statistics on other missing persons cases in Iowa.
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Last Friday that led them to the pig farm near the wildlife reserve where they searched a home and a garage, reportedly without a warrant, Fox News said.
A $172,000 reward is being offered for the safe return of Tibbetts.
According to police, officers responded to a possible sighting of 20-year-old Mollie Tibbetts on Thursday, July 26, at a truck stop in their jurisdiction.
"It is our greatest hope that if someone has her that they would just release her and claim that money that we have raised for her freedom".
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In those final minutes, unable to get to his wife and their great-grandchildren, Ed Bledsoe was able to get through on the phone. Crews worked throughout the night to reinforce containment lines, but the fire behavior's remained extreme, fire officials said.
Tibbetts was studying psychology and wanted to get a Ph.D. and write books, her father said.
Calderwood said she feels her daughter's presence every day.
She was dog-sitting that evening for her boyfriend and her boyfriend's brother, who were out of town, at a home where she was living this summer after completing her second year at the University of Iowa. Mollie Tibbetts' mother, Laura Calderwood, believes she may have been abducted.
But he said, "I'm confident we have a solid timeline that we're working on" - though he added that they weren't releasing that information just yet. Initially, they said she was wearing a black sports top - but now say the top was pink.
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"The first night she went missing, I was distraught", Calderwood told CNN affiliate KCCI in Des Moines.