Mollie Tibbetts, 20, disappeared on July 18 in Brooklyn, a small community an hour east of Des Moines
On the day of her disappearance, Tibbet's brother had her dropped off with her boyfriend to sit, HLN reports , CNN's sister network. The investigators said a neighbor had seen the student from the University of Iowa who had run later that night, according to HLN.
Days after her disappearance, the search for the woman has intensified. The FBI participated in the investigation this week and dedicated 15 agents to the search, which involved an army of volunteers.
Investigators have been running searches for Tibbetts' Fitbit, which she wore, and her Snapchat, Instagram, and Facebook accounts, said Mitch Mortvedt, spokesman for the Iowa criminal investigation department.
"This is a new one" That's one of the reasons we called the FBI. It's probably also pretty new to them, "said Mortvedt." I do not know any other case here in Iowa where we specifically used Fitbit information. "