The family of a missing University of Iowa student now believes she is being held captive and has increased the reward for her return.
By Thursday afternoon search teams were back in the area, combing the nearby fields for any trace of the missing girl, according to Fox News.
Over two weeks since her shock disappearance, the family of missing university student Molly Tibbetts have not given up hope.
Her father has urged the public to report any information, no matter how trivial it might seem.
The latest came Thursday, when police confirmed that a possible sighting of Ms Tibbetts at a Missouri truck stop turned out not to be her.
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.More news: Facebook plunges more than 24 percent on revenue miss and projected slowdown
Anyone with information was encouraged to call Crime Stoppers of Central Iowa at 1-800-452-1111 or visit www.crimestoppersofcentraliowa.com, where tips can be anonymously submitted.
Twenty-year-old Mollie Tibbetts was last seen jogging on the night of July 18 in the town of Brooklyn, Iowa.
"At this point, we don't know her exact whereabouts but we continue to look".
"If someone has abducted her, we are pleading with you to please release her", Ms Calderwood said.
WQAD's fellow ABC affiliate KCRG in Cedar Rapids is reporting a heavy law-enforcement presence on a rural stretch of highway in Poweshiek County that could be related to the disappearance of Mollie Tibbetts.
Jack, also 20, said he doesn't believe there's a chance Tibbetts would have left on her own accord. In spite of the unanswered questions in the case, "I do think she's out there", Rob Tibbetts said. "We are very hopeful with the electronic data we are getting back", Mitch Mortvedt, assistant director of the Iowa Division of Criminal Investigation, previously told the Des Moines Register.