BROOKLYN, Iowa (KCRG-TV9) -- Authorities tell TV9 they have received information from Fitbit after filing a search warrant.
Police have not specified what information is in the search warrants at this time.
Today marks one week since anyone last saw a missing University of Iowa student.
20-year-old MollieTibbetts disappeared while dog-sitting at her boyfriend's house.
That was in the small town of Brooklyn in Poweshiek County.
A week later people, including the FBI and DCI, are still investigating her disappearance and hoping to find some trace of where she might be.
Iowa Division of Criminal Investigation Assistant Director Mitch Mortvedt said both agencies were in Brooklyn Tuesday to work on the case.
Mortvedt said the FBI is using Tibbetts' online history and cellphone app usage to help pinpoint where she might be located.
Authorities said Tuesday they aren't ruling out abduction in the case.
Since her disappearance, the Poweshiek County Sheriff's Office says they have recieved hundreds of messages and tips regarding Tibbetts' disappearance.
If you have any information, email the sheriff's office at Tips@poweshiekcosheriff.com or call 641-623-5679.