- Break came when Sigg's mother called 911 and handed him the phone
- 10-year-old girl's body parts were found in a Denver suburb park
- Arraignment set for March 12
- Sigg must face trial on 18 of 20 counts related to the slaying of Jessica Ridgeway
Austin Reed Sigg must face trial on 18 of 20 counts related to the slaying of 10-year-old Jessica Ridgeway and an attack on a jogger last year, a spokesman for Colorado's courts said Friday.
Rob McCallum made the announcement after the 18-year-old Sigg appeared before Jefferson County Judge Stephen Munsinger in a preliminary hearing. The arraignment is set for March 12; Sigg remains on no-bond hold.
The student was charged last October with kidnapping, sexual assault and murder in the death of Ridgeway, whose body parts were found in a park in a Denver suburb.
Sigg, a student at Arapahoe Community College, also was charged with attempting to kidnap, sexually assault and kill a female jogger last May.
Sigg, who lived about one mile from Ridgeway's home in Westminster, was 17 at the time of the killing; he is charged as an adult.
He was accused of strangling Ridgeway, dismembering her and placing some of her body parts in a crawlspace under his family's home.
Police found parts of her body at a park five miles away five days after the bespectacled blonde girl disappeared while walking to Witt Elementary School on October 5.
A break in the investigation came when Sigg's mother called 911 and handed him the phone. Sigg, police said, confessed.