Authorities in Oklahoma and Missouri are investigating whether the BTK serial killer was responsible for other homicides, with their search leading them to dig this week near his former Kansas property in Park City.
Osage County, Oklahoma, Undersheriff Gary Upston told The Associated Press on Wednesday that the investigation into whether Dennis Rader was responsible for additional crimes started with the re-examination last year of the 1976 disappearance of Cynthia Kinney in Pawhuska. The case, which was investigated on and off over the years, was reopened in December.
