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Mollie Tibbet's case: Investigators turn to Fitbit data for clues to missing Iowa students



BROOKLYN, Iowa In this Iowa city Mollie Tibbet's face is plastered everywhere, but the 20-year-old student is nowhere to be seen.

"You never think you'll see your sister on a poster with a missing sign directly above it," said Jake Tibbetts, Mollie's brother.

Jake was the last to see her more than a week ago when he dropped her off at the house where her friend Jack Dalton lives.

"I only trust and trust the police," Dalton said.

  Missing Student

This undated photo was published by the Iowa Criminal Investigation shows Mollie Tibbetts

Iowa Department of Criminal Investigation on AP

Dalton was not in town at the time of the disappearance and is not a suspect. Tibbetts went their usual evening run, but never came to work the next day. Search teams have spread throughout the area and on their usual running tracks. Now 15 FBI agents have joined the investigation, and officials are examining Tibbitts Fitbit and the social media footprint for clues to create a timeline.

"It takes it to a whole new level because we hope to be able to do a thorough investigation and know where it was when it was there," said Mitch Mortvedt, Special Representative of the Iowa Division of Criminal Investigation.

Tibbet's & Fitbit could potentially give investigators plenty of data on the day they disappeared using GPS technology and other data such as their heart rate. Investigators have also issued warrants for social media companies that could help pinpoint where they went.

"You can actually overlay the location data with the real world to find out what exactly happened," Thomas Yohannan, data recovery expert. "They are essentially trying to find a witness to the events that led to their missing person."

Late Thursday, investigators said they had reconstructed their timeline of Mollie's run relying on Fitbit data, cell phone pings, and eyewitnesses.

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