Austin Reed Sigg arrested in murder of Jessica Ridgeway in Colorado

Police in Colorado said Wednesday 17-year-old Austin Reed Sigg has been arrested in the murder of 10-year-old Jessica Ridgeway.

Sigg was arrested at his family's home in Westminster at 7:45 p.m. on Tuesday on suspicion of two counts of murder in the first degree, one count of second degree kidnapping and two counts of criminal attempt.

The suspect cooperated with police and waived his rights, according to the report.

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

Sigg expressed interest in forensic science.

He 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.

He attended Warren Tech where he was involved in a student organization called HOSA, or Health Occupation Students of America. He competed in crime scene investigations and was a state winner in forensic science and biotechnology competitions.

Some friends have told media outlets that he expressed interest in becoming a mortician.

Police were at 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 AirTracker7 video shows investigators going 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, Westminster police said.

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

"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 a Wednesday news conference.

"Charges are forthcoming. Charges will be filed within a couple of days and then we start a different process," Storey said. "Mr. Sigg has a presumption of innocence and we are going to honor that. And that is all I have to say."

Sigg is in Jefferson County court Thursday morning for an initial appearance. He will not be formally charged until later. According to the custody report, he is facing two charges of first-degree murder, attempted murder, and second-degree kidnapping.

Police said during a Wednesday press conference Sigg faces charges in both the Ridgeway murder case and the May 28, 2012 attempted abduction of a 22-year-old female jogger at Ketner Lake .

In the May case, police said the suspect grabbed the jogger from behind and tried put a chemical-laced rag over her mouth. She was able to escape and called 911, but the attacker was not caught.

Sigg lives about 1.2 miles from Chelsea Park, where Ridgeway was walking on October 5 when she disappeared.

Ridgeway's remains were found five days later in an open space park in Arvada.

Sigg, who is 5 feet 6 inches tall and weighs 160 pounds, listed his occupation on the custody report as a student at Arapahoe Community College. He reportedly attended Standley Lake High School.

The custody report said officers told Sigg's mother in person that they were arresting her son.

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: PDamberalert@cityofwestminster.us .

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