Authorities say the BTK serial killer is the “prime suspect” in at least two unsolved cases, including one in Oklahoma that led authorities to dig this week near his former Kansas property in Park City. Osage County, Oklahoma, Undersheriff Gary Upton 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. Upton said another case that is being re-examined is the death of 22-year-old Shawna Beth Garber, whose body was discovered in December 1990 in McDonald County, Missouri.
