Police searched the area, spoke to witnesses and reviewed surveillance footage.
No other details about the sighting were released.
The truck stop is located more than 230 miles away from where Tibbetts was last seen.
The morning after she disappeared, Tibbetts’ family reported her missing after she didn’t show up to her job at a daycare center in a nearby town.
At a news conference on July 31, Kevin Winker, director of investigative operations for the Iowa Division of Criminal Investigation, said investigators haven’t drawn any conclusions about what happened to Tibbetts other than that disappearing on her own is “not consistent with her past.”
He said dozens of investigators from his agency, the FBI, and local law enforcement are working on the case, and that they haven’t ruled out any possibilities and are checking out every lead they receive.
“You can’t do anything [in Brooklyn] there without someone seeing it,” Rob added.
Neighbor Dave Collum, a retired maintenance director for the school district, said he was interviewed by investigators who told him that data from Tibbetts’ Fitbit showed she jogged past his home that evening and made it home from the run safely. He said investigators told him she was doing homework on her computer later that evening.
Collum said he often saw Tibbetts running in the neighborhood but didn’t on the night she vanished. Collum has joined hundreds of other volunteers in searching the area’s cornfields and buildings for Tibbetts. He put a magnet with her face on it on his red pickup truck, so he could have a reminder of her every time he gets into it.
“Everybody in town is still trying,” he said. “It’s sad.”
More than 200 leads have been collected as part of the investigation, police said.
Anyone with information is urged to call the Poweshiek County Sheriff’s Office at 641-623-5679.
