The Tennessee Bureau of Investigation has renewed its search in rural Franklin County for missing Shelbyville teacher Shelley Mook after receiving new leads.
A command post was set up Thursday morning along the CSX railroad tracks in Cowan, Tennessee and officials and volunteers were conducting a ground search of the area.
Mook has been missing since she left Harris Middle School on the afternoon of February 28, 2011.
Investigators believe she went to her ex-husband, Tyler Mook's home to drop off their daughter.
It is believed that Tyler Mook was the last person to see the young mother alive.
Mook was supposed to meet a maintenance man at her new apartment in Murfreesboro after dropping off her daughter, but never made it.
Her car was found burned out in Rutherford County later that night.
TBI spokesperson Kristin Helm told Nashville's News 2 Tyler Mook is still considered a person of interest.
She said, "[Tyler Mook] is still very much a person of interest. He has never really cooperated with our agents as far as sitting down and giving them an interview about the last time he saw her."
According to a Facebook page dedicated to finding Shelley, Mook's mother now has custody of her little girl, and she is living in Pennsylvania.
"She doesn't really have a champion here who is speaking for her on a weekly, monthly or daily basis, so I think the agent on this case feels like he needs to do that for Shelley," said Helm.
A family spokesperson told Nashville's News 2, "Everyday we hold out hope that the person responsible will be held accountable."
Anyone with information on Mook's whereabouts should call the Bedford County Sheriff's Department at 931-684-3232, the Rutherford County Sheriff's Department at 615-904-3049 or the Tennessee Bureau of Investigation at 1-800-TBI-FIND.
A $20,000 reward is being offered for information leading to her whereabouts.
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