Leah Martin Investigation Timeline:
May 30, 2015: Leah Martin goes missing. She was last seen at E.C.'s Auto Repair in Graham.
August 5, 2015: Martin's remains found on a property, 5656 FM 209, outside of Graham. The property belongs to Ross and Krista Hellams.
August 19, 2015: Billy Ray Minkley Jr. is arrested and charged with tampering with physical evidence, possession of a firearm by a felon and possession of prohibited weapon.
August 22, 2015: Ross Hellams, Sr. is arrested.
September 18, 2015: Leah Martin's autopsy is released.