WESTMINSTER, Colo. (CBS4)– The murder suspect arrested in the Jessica Ridgeway case allegedly has confessed to the crime twice.

First, Austin Sigg told his mother that he was responsible for the murder of the 10-year-old who was abducted while walking to school on Oct. 5. Sigg’s mother, Minday Sigg, called Westminster police on Tuesday to tell them about his involvement.

Police came to the home and Sigg, 17, told police in great detail about what happened to Jessica. He also told them that human remains were inside a crawl space under the home.

Sources told CBS4 Investigator Rick Sallinger that Sigg told police he strangled Jessica after he took a hold of her and got her into his vehicle.

Sigg was taken into custody Tuesday night at his home in the 10600 block of 102nd Avenue in Westminster. That is near Ketner Lake Open Space several blocks from where Jessica was abducted on her way to Witt Elementary School

According to the police report Sigg cooperated with officers and waived his rights.

He is being held on two counts of investigation of murder, kidnapping and criminal attempt at the Mount View Youth Services Center.

sigg home copter CBS4 Investigator: Austin Sigg Told Police Where To Find Human Remains

Investigators surround Sigg’s home in the 10600 block of 102nd Ave. in Westminster on Wednesday. (credit: CBS)

Sigg attended Witt Elementary, the same school Jessica attended when she was abducted. Sigg was enrolled in Jefferson County Schools from fifth to eleventh grade. After Witt Elementary, he attended Wayne Carle Middle School and Standley Lake High School.

Lucas Goodrich attended school with Sigg since middle school.

“There was always something wrong with him. He was always one of the kids in the class who was really smart, but he would be by himself,” Goodrich said. “He’d talk to himself and just act really awkward around people.”

Sigg attended Warren Tech at the same time as Standley Lake High School. Sigg did not receive a diploma from Jefferson County Schools, however he did complete the GED program and received a certificate.

standley lake 2011 CBS4 Investigator: Austin Sigg Told Police Where To Find Human Remains

Austin Sigg Standley Lake 2011 Yearbook (credit: CBS)

Standley Lake Students remembered Sigg.

“He dropped out of Standley, he went to Arapahoe Community College for mortuary sciences, and like forensics, sort of,” former Standley Lake classmate Rachael Bradley said. “He attended Warren Tech as well for forensics.”

Many who know Sigg say they are in disbelief.

“You have to know a lot, which is what I don’t understand, because it takes very many years to understand the steps of getting rid of fingerprints and stuff like that,” former Arapahoe Community College classmate Sarah Moravec said.

where this all happened tra CBS4 Investigator: Austin Sigg Told Police Where To Find Human Remains

(credit: CBS)

Arapahoe Community College classmate Hannah Bane described Sigg’s interests as morbid.

“He was so infatuated with the idea of death. That’s just the feeling I got,” Bane said.

Sigg came from a troubled home that included divorce and many run-ins with the police.

Sigg’s father, Robert Sigg, has a long arrest history, including multiple DUIs, assault, domestic violence and drug-dealing arrests.

Robert Sigg has also been involved in numerous civil actions, most recently he was convicted in 2006 for involvement in a mortgage fraud scheme after he was arrested by the FBI.

Sigg’s mother filed for Chapter 7 bankruptcy in May.

Jessica Ridgeway Murder Timeline

– Jessica Ridgeway, 10, disappeared on her way to school on the morning of Oct. 5. After leaving home on foot, she never met up with friends she normally walks to school with at Chelsea Park. The park is about three blocks from her home and about a mile from the school.

– When she didn’t arrive at Witt Elementary School in Westminster, Jefferson County Schools officials tried to contact her mother. They made a call at 10 a.m. but were only able to leave a voicemail. Ridgeway’s mother, who works an overnight shift and sleeps during the day, didn’t get the message until 4:30 p.m. and immediately contacted Westminster police.

– It took about five hours before the protocols were met in the case for the Colorado Bureau of Investigation to call an Amber Alert.

– Ridgeway’s backpack was found on the sidewalk near Alpha Court and Andrew Drive in the Rock Creek neighborhood in Superior. That’s 6.4 miles away from her home. It’s unknown so far at what point the backpack wound up there.

– The CBI analyzed the backpack for DNA evidence and collected evidence from Ridgeway’s home for comparison.

– Searches were taking place around Jessica’s home and her school, as well as in open space areas in Westminster. Another area that underwent an extensive search was Rock Creek and open space areas near there.

– A day after their tearful televised plea for help and thanks to the community, police on Oct. 10 ruled out Ridgeway’s parents as being involved in her disappearance. Police said Ridgeway may have been abducted by an unknown suspect.

– Late in the day on Oct. 11 Ridgeway’s body was found in Arvada on Highway near Pattridge Park Open Space and Highway 93, about seven miles from Ridgeway’s home.

– Police arrested Austin Reed Sigg, 17, at his home in the 10600 block of 102nd Avenue on Oct. 23. According to the police report, Sigg confessed to police and waived his rights when taken into custody.

Westminster Police Ridgeway Case Tip Line: (303) 658-4336 or pdamberalert@cityofwestminster.us


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