Home / Articles / News / News /  UPDATED: Westminster Police announce arrest in Jessica Ridgeway case
. . . . . . .
Give Through iGivefirst
Wednesday, October 24,2012

UPDATED: Westminster Police announce arrest in Jessica Ridgeway case

Photo courtesy of the Westminster Police Department
Austin Reed Sigg

This story is part of Boulder Weekly's Jessica Ridgeway package.

Map of Arvada and Westminster with Jessica's home, where her body was found and where her backpack was found

Map of Jessica's neighborhood

Killer's 'awareness space' might lead to clues, by Joel Dyer and Jefferson Dodge

Sketches of a killer, by David Accomazzo and Elizabeth Miller

Local schools respond to Jessica's death, by Elizabeth Miller

Boulder County sheriff: trick or treat with your kids this year, by Jefferson Dodge

Westminster Police: Ketner Lake attempted abductions may be linked to Jessica Ridgeway, by Boulder Weekly staff

Jessica Ridgeway: Local law enforcement reacts to murder, by Jefferson Dodge


Westminster Police Department has announced an arrest in the Oct. 5 abduction and murder of 10-year-old Jessica Ridgeway.

Police confirmed that their suspect lives near the girl's home. He is identified as Austin Sigg, 17. He lives only a few blocks from Ketner Lake and less than a mile from Jessica Ridgeway's home.

Read the press release below:

Arrest Made in Ridgeway Case - Press Conference at Noon
(Oct 24, 2012)


Law enforcement received the major break in the Jessica Ridgway investigation they have been hoping for. Late Tuesday evening police received a call that led them to a home near the Ketner Lake Open Space. With this discovery, police are able to announce we have made an arrest in the Ridgeway murder investigation. Additionally, authorities will file charges against the attacker in the May 28, 2012, attempted abduction at Ketner Lake.  

Police will release additional information about the arrest at a press conference in front of the Westminster Police Department at 12:00 pm, today. (9110 Yates Street, Westminster, CO 80031).


  • Westminster Police Chief Lee Birk
  • FBI Assistant Special Agent in Charge Mike Rankin
  • Jefferson County District Attorney Scott Storey

At the press conference, media will be provided with a copy of the arrest and booking custody along with a photograph of the suspect.  A digital copy of both will be forwarded by email once the press conference has concluded.

Police believe the public may view the suspect’s photograph and have additional information to provide to the investigation.  The release of the photograph may also help authorities determine if this individual is responsible for any other crime/s, either reported or unreported.  The police tip line is still operating: 303-658-4336 or email: PDamberalert@cityofwestminster.us     

The identification and apprehension means residents will see increased police activity in very focused areas of our communities.  A tremendous amount of investigation and follow up still needs to be conducted and police ask the public and media for their continued cooperation and understanding.  Limited information can be released as both cases move into courts for prosecution.

A limited number of questions will be addressed by Investigator Trevor Materasso following the press conference.  If you have any questions regarding this press release, please contact Investigator Trevor Materasso at 303-658-4427 or through email at: tmateras@cityofwestminster.us.

Respond: letters@boulderweekly.com

  • Currently 3.5/5 Stars.
  • 1
  • 2
  • 3
  • 4
  • 5
No Registration Required

Thank god!



I had a feeling it was a student, in the lower age ranges rather than a FT working adult. In fact, I thought it might've been a H.S. student on their way to school in her own subdivision...well, close ! He's H.S. aged but evidently taking college courses...in mortuary science or criminal justice. Which makes sense with the clean-edged dismemberment, & the retention of some of the body parts while the rest were dumped in the open space. And the cross was like those I've seen the male surfers/beach types wear - like that particular open space her remains were located in, a place known for being a teen-college aged hang out over the years. Even if the mother hadn't come forward, I'll bet if they'd just gotten the registration records for the annual "Bolder Boulder" run, they'd eventually have found him. 

Good to know he's in custody; good to know he's charged as an adult. 



The sketch of the May abductor is a good likeness to him; wonder why his neighbors, the girls he sought out to play hide n seek with, & sought to come over their homes to "play" with, & said he kept to himself, seemed a bit "odd", didn't make the connection.

I hope the 8 yo boy attacked on May 10th in Ketner Lake trails, who was with his 13 yo sister & her 13 yo friend, are able to make a connection with him being the perp; it's just like Jessica's abduction just w/o the car - a lesson he learned from those previous unsuccessful abductions.




This had to be very difficult for the suspect's mother.  She did the right thing. I congratulate her on doing the right thing, something other mothers of (alleged) murderers have been in a position to do, but did not do or did with only partial cooperation.

As a mother, it had to be heartbreaking, & the most painful, devastating, thing she's ever gone through, or been put through by her son. My prayers go out to her, as much as to Jessica's mom.