A woman who lives a block away from Tibbetts' boyfriend, Dalton Jack, told reporters that a person was driving very slowly around the area that evening.
The Brooklyn, Iowa resident delivered the news to the FBI when they questioned her regarding Tibbetts' disappearance.
As RadarOnline.com previously reported, Tibbetts, 20, went for a jog around her neighborhood at around 10:00p.m. on July 18, and never came back.
Various people have been questioned following the disappearance, including a pig farmer who's denied any involvement in the case.
As for Tibbett's family, they've told reporters that they are offering a monetary reward and taking any tips they can get.
"We miss you, we're looking for you and we will never give up," Tibbett's aunt Kim Calderwood told TV station WOI.
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