Prosecutors expected to ask Austin Sigg be charged as an adult Tuesday

Austin Sigg, the 17-year-old suspected of abducting and murdering 10-year-old Jessica Ridgeway. (Photo: Westminster Police Department)

Austin Sigg, the 17-year-old suspected of abducting and murdering 10-year-old Jessica Ridgeway. (Photo: Westminster Police Department)

Austin Reed Sigg (Photo: Westminster Police Department)

Austin Reed Sigg (Photo: Westminster Police Department)

For details about the 17 charges Sigg now faces, click here

JEFFERSON COUNTY, Colo. — Prosecutors plan to ask Tuesday that the suspect in the murder of Jessica Ridgeway be charged as an adult.

17-year-old Austin Sigg will be in Jefferson County Court where that request is expected to be made.

The teenager is accused of kidnapping and killing 10-year-old Jessica Ridgeway several weeks ago.

Legal analysts say if Sigg is charged as an adult and convicted, he could still be eligible for parole in 40 years.

“The idea between the entire juvenile process is that by law and medical science, because he is a juvenile his brain is presumed to work differently and that’s why the law treats him differently,” says attorney David Beller.

If adult charges are requested, a judge could set a hearing where we may learn some of the evidence police have gathered against Sigg.

The Jefferson County District Attorney says Sigg confessed to the murder, and that investigators have DNA evidence linking him to the crime.