A teenager charged with abducting and killing a 10-year-old Colorado girl is due in court to enter a plea.

Eighteen-year-old Austin Sigg is charged with the Oct. 5 disappearance and slaying of Jessica Ridgeway in the Denver suburb of Westminster. He is to appear in court Tuesday.

Jessica’s disappearance created a furor as Denver-area parents and school officials took extraordinary precautions to keep children safe.

Part of Jessica’s body ultimately was discovered in a field. Other remains were found in Sigg’s home.

Investigators say Sigg told them after he turned himself in that he wanted to plead guilty.

Sigg cannot be sentenced to death because he was 17 at the time of the crime. He faces life in prison with the possibility of parole after 40 years if convicted.