Sigg pleads guilty in murder of Jessica Ridgway

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By Ramsey Scott

Austin Sigg has pleaded guilty to the kidnapping, sexual assault and murder of 10-year-old Jessica Ridgeway in October 2012.

Sigg’s trial had been scheduled to start Oct. 2 in Jefferson County District Court, but the district attorney’s office said that Sigg’s attorneys’ contacted them Sept. 30 to say their client would plead guilty.

"Today Mr. Sigg pled guilty to all charges. He has been held fully accountable for his criminal acts. There was no plea bargain. There was no deal,” District Attorney Peter Weir said in a news release. “No charges were dismissed as part of a plea bargain. However, three counts of felony murder merge into the count of first-degree murder after deliberation count. A person can only be convicted and sentenced to the murder of a person once.”

Jessica Ridgeway went missing on Oct. 5 as she walked to school near her home in Westminster. After a massive search, her body was found in Arvada on Oct. 12.

Sigg, a former student at Arapahoe Community College, was arrested Oct. 23. While Sigg was 17 at the time of his arrest, the DA's office decided to try him as an adult.

Sigg pleaded guilty to 13 counts, including first-degree murder, two counts of second-degree kidnapping and sexual assault on a child. He also pleaded guilty to two counts related to an attempted kidnapping of a female jogger near Ketner Lake in Westminster in May 2012.

Sigg will now wait in the Jeffco jail for his sentencing hearing on Nov. 18-19.

Contact Ramsey Scott at ramsey@evergreenco.comand follow him on Twitter @RamseyColumbine.