Winker said he understands the frustration about the lack of information being released to the public about the case, "We are constantly evaluating what information we should release and what we shouldn't".
Kevin Winker, director of investigative operations for the Iowa Department of Public Safety said on Tuesday all he could say was that the disappearance "is not consistent with her past", CNN reported.
The reward was meant to "help facilitate the process of receiving information anonymously that we can use to pay for her or information that would lead to her location", she said.
During a briefing Friday, authorities would not confirm any new details about the investigation into Tibbetts' disappearance after she went for a jog near Brooklyn, Iowa on July 18.
Her parents reported her absence to police on July 19, and since then, authorities have embarked on a thorough search of the town of Brooklyn, Iowa, and its surrounds. Investigators have also canvassed neighborhoods and conducted dozens of interviews.
Lewis Hamilton over the moon to win in Hungary
Bottas, suffering a loss of downforce when the Ferrari swung in front of him, had nowhere to go and contact was inevitable. Vettel will certainly be hoping so. "We've got things to improve, we've got performance to bring moving forwards".
However, Iowa Division of Criminal Investigation special agent Mike Krapfl confirmed Thursday that the reported sighting of Tibbetts wasn't substantiated and has been ruled out by investigators.
"We really need someone to come forward now", her father told The Register. "We're doing everything we can to locate her and track her down".
A $172,000 reward is being offered for the safe return of Tibbetts.
"Everyday I feel Mollie's presence with me". Sometimes I just feel her sitting on my shoulder.
Laura Calderwood said during a news conference that she believes her daughter, 20-year-old Mollie Tibbetts, is alive but has potentially been kidnapped.
In the meantime, Jack told ABC News he's "just taking it day by day".
Tibbetts was last seen wearing dark-colored running shorts, a pink sports top and running shoes.