Tibbetts disappeared on July 18, in Brooklyn, a small community an hour east of Des Moines, according to the Poweshiek County Sheriff's Office.
Police in Kearney, Missouri, said an employee at a truck stop reported Sunday that she saw someone resembling Tibbetts eating at a Taco Bell.
The department said in a statement that it spoke to witnesses and reviewed video footage before forwarding a report to a task force investigating Tibbetts' disappearance.
Tibbetts, a 20-year-old from Brooklyn, Iowa, has been missing for two weeks. Investigators are still trying to determine why she disappeared. Iowa Division of Criminal Investigation special agent Mike Krapfl confirmed Thursday that the reported sighting of Mollie Tibbetts wasn't substantiated and has been ruled out by investigators.
The homeowner told TV-9 it is related to the Mollie Tibbetts case but investigators will not confirm what they were looking for or if they found anything here.
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Kearney, Missouri is located about 25 minutes from Kansas City.
In an exclusive interview with Fox News Channel on Wednesday, Dalton Jack said he believes the home's doors were left unlocked around the time of Tibbetts' disappearance. Mollie Tibbetts' mother pleaded for anyone who may have abducted her daughter to let her go and said anyone with information on the case can come forward anonymously. Please remember that ANY tips should be shared at the established tip line. Tibbetts is believed to have sent a snapchat message to chat and been on her computer doing homework around 10 p.m.
"You obviously care for Mollie and, if you're holding her, you've made a huge mistake", he said. Collum has joined hundreds of other volunteers in searching the area's cornfields and buildings for Tibbetts.
There is a $30,000 reward for information that leads police to Mollie's whereabouts. Sometimes I just feel her sitting on my shoulder and Mollie was an incredibly strong young woman, and I don't know that I have the strength in me but Mollie's lending me her strength, every day, every night.
Authorities are investigating an unconfirmed sighting of missing Iowa woman Mollie Tibbets.