The BTK serial killer has emerged as the "prime suspect" in two cold cases of unsolved killings, one in Oklahoma and another in Missouri, prompting authorities to initiate a dig near his former property in Park City, Kansas. Undersheriff Gary Upton of Osage County, Oklahoma, stated that the investigation into Dennis Rader's potential involvement in additional crimes began last year with a re-examination of the 1976 disappearance of Cynthia Kinney, a 16-year-old cheerleader from Pawhuska. This long-dormant case was reopened in December. Sheriff Eddie Virden revealed to KAKE-TV that the installation of new alarms by a bank across from the laundromat where Kinney was last seen triggered the investigation. Rader had worked as a regional installer for ADT at that time, although confirmation of his installation of the systems is pending. He was also engaged with the Boy Scouts in the area.