Law enforcement found media on Sigg's cell phone that included scenes of human dismemberment, sexual bondage, and rape.

[2] In an interview with investigators, Sigg's younger brother stated that he made a "slightly creepy" comment about how his schooling was teaching him how to commit murder and get away with it.

She described the perpetrator as being white or light skinned, between 18–30 years of age, having brown hair, and being roughly 5 ft 8 in (1.73 m) tall.

According to then Chief Deputy District Attorney Hal Sargent, the purpose of the backpack's placement and items was to make clear that Ridgeway was dead.

On October 10, Ridgeway's torso was discovered in two black bags on 82nd Street of Pattridge Park, Arvada, Colorado.

At the time the chief prosecutor assigned to the case declined to comment on the specific charges that were planned to be brought before Sigg.

Due to cited safety concerns as a result of the high-profile nature of the case, only the media and family members of Sigg and Ridgeway were permitted in the court room October 30.

[7] In June 2014, Sigg was moved to an undisclosed out-of-state prison to preserve both his and the Ridgeway family's privacy and safety.