Overview

• Mary Kay Heese, 17, was found dead with multiple stab wounds in a roadside ditch in 1969.
• Joseph Ambroz was arrested in Ponca City, Oklahoma, and will be extradited to Nebraska for trial.
• Investigators exhumed Heese's body in September, leading to new evidence implicating Ambroz.
• Heese was last seen near her home in Wahoo, Nebraska, and was believed to have been chased and overpowered.
• Over 700 individuals were investigated over the decades, with a tip line eventually leading to Ambroz's arrest.