Serial killer Dennis Rader stands before Sedgwick County District Court Judge Greg Waller as sentencing is read Aug. 18, 2005, in Wichita, Kan. Rader received nine life terms and a"hard 40" for the 10 murders he committed over nearly 30 years ago.
Upton said the search spiraled from the investigation into Cynthia"Cyndi" Dawn Kinney, a 16-year-old cheerleader who was last seen leaving a relative's laundromat on June 23, 1976. Fox News Digital previously reported that prison guards seized Rader's belongings during a meeting with cold-case investigators.
Kerri Rawson, Rader's daughter, told Fox News Digital on Tuesday that"The theory is he could have placed evidence of cases under stone pavers under the metal shed he built early to mid 90s. Like drivers licenses in jars."