Austin Sigg to be tried as adult in murder of Jessica Ridgeway

WESTMINSTER, Colo. (KMGH) - Prosecutors in Colorado announced Thursday that they will try the teen suspect arrested in the abduction and murder of Jessica Ridgeway as an adult.

Austin Sigg, 17, made his first appearance in Jefferson County court Thursday morning. He appeared in a bright, light green jumpsuit. His hands and feet were both shackled.

Sigg's mother was in court. Jessica Ridgeway's mom, aunt and other family members took up an entire row in the courtroom. All were dressed in purple, Jessica's favorite color. Jessica's mother was wearing a purple ribbon in her hair.

Sigg appeared calm through the proceedings and almost looked like more of an observer. At one point, Sigg interrupted the judge because he said he didn't understand a portion of the advisement hearing.

The judge paused the proceedings while Sigg's court-appointed attorneys gave him an explanation.

The judge asked if Sigg had a legal guardian present, attorneys said Sigg's mother was there.

The charges were not read in court on Thursday, but the judge did tell Sigg he was being held in two separate cases. Another hearing was scheduled for next Tuesday.

The defense asked the judge to put all documents in the case under seal and issue a gag order in the case. The judge agreed to seal the documents, but did not issue a gag order.

In court, Sigg revoked the waiver of his rights that he signed when he was arrested Tuesday night. That means he can not be questioned without his attorneys present.

The judge ordered Sigg be held without bond.

Sigg is being held on suspicion of two counts of first-degree murder, one count of second-degree kidnapping and two counts of criminal attempt.

The first three charges (murder and kidnapping) are related to the Jessica Ridgeway case, according to Westminster Police spokesman Trevor Materasso.

Materasso said the last two charges, attempted murder and attempted kidnapping, are related to a May incident where a 22-year-old woman was attacked while she jogging around Ketner Lake in Westminster.

Sigg Turns Himself In

Westminster police said they received a call Tuesday evening that led them to Sigg's home near the Ketner Lake Open Space, which is about 1 mile from Jessica's home on the other side of Ketner Lake.

He was arrested at his home around 7:45 p.m. Tuesday and cooperated with police and waived his rights, according to the custody report.

Awoman identifying herself as Sigg's aunt said the teen went to his mother on Tuesday with "disturbing information" and his mom urged him to call police and turn himself in.

Sigg's mother, Mindy Sigg, told reporters that she made the phone call to police and then her son turned himself in.

His mother was at the home when he was taken into custody.

Sigg does not appear on any Colorado sex offender lists and since he is a juvenile, his previous record has been sealed.

He is being held at the Mount View Youth Services Detention Center.

Sigg expressed interest in forensic science

Sigg is currently a student at Arapahoe Community College.

He was enrolled at JeffCo Schools from fifth grade to 11th grade, attending Witt Elementary (the same school Jessica attended), Wayne Carle Middle School, Standley Lake High School and Warren Tech, a vocational school.

He did not graduate from Jeffco Schools but obtained his GED, a JeffCo Schools spokeswoman said.

At Warren Tech, he was involved in a student organization called HOSA, or Health Occupation Students of America, where he competed in state-wide competitions, placing as a finalist in forensic science and biotechnology categories.

Some friends have told media outlets that he expressed interest in becoming a mortician and he was studying mortuary science at Arapahoe Community College.

Police search homes in Westminster, Parker

Crime scene investigators descended on his home Wednesday afternoon and towed away a bronze Jeep. They erected two white tents in his driveway where they were putting items of evidence they were pulling from his home. They put up police tape all around his home and went through the back yard.

The neighborhood around Sigg's home at 10622 W. 102nd Ave. will be closed off to everyone but residents living in that area for the next several days, Westminster police said.

Sigg has lived in this home since he was an infant.

His father -- who divorced his mother in 2000 -- still owns a home in Parker.  Investigators at KMGH, the Scripps affiliate in Denver, have confirmed that deputies, along with several FBI agents, were also searching that home on Wednesday.

Police said anyone who has any information about Sigg after seeing his photo can still call the tip line at 303-658-4336 or email:

The investigation is ongoing and any information

about Sigg that could be helpful is still welcome.

However, affidavits in the case have been sealed.

"Justice for Jessica is a process and this is the beginning of that process. I know you are yearning for a lot of information, but we can't give you a lot of information," Jefferson County District Attorney Scott Storey said during the news conference.

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