A detective says an 18-year-old accused of kidnapping and killing a suburban Denver school girl kept some of the girl's remains in a crawl space at a home he shared with his mother.
Westminster police detective Luis Lopez testified Friday that the teenager, Austin Sigg, had been on investigators' radar before a neighbor called a tip line suggesting they check him out.
Two FBI agents responded and took a DNA sample from Sigg on Oct. 19, four days before his mother called to say he confessed to killing the 10-year-old girl, Jessica Ridgeway.
Sigg's mother also told authorities of the human remains.
Lopez says the remains were later identified as Jessica's and that DNA samples link him to Jessica's remains and clothing. He says no semen was found.
Sigg is charged with murder, kidnapping, sexual assault and robbery. Prosecutors have also added three counts of sexual exploitation of a child because child pornography was allegedly found during the investigation.