The 17-year-old boy who allegedly confessed to killing 10-year-old Jessica Ridgeway was formally charged as an adult in Jefferson County on Tuesday morning.

Austin Sigg is being held without bail related to the murder and kidnapping of Jessica and an attack on a female jogger at Ketner Lake over the Memorial Day weekend.

In all, he was charged with 17 counts. Eleven charges were related to the abduction and killing of Jessica, including first-degree murder after deliberation, three counts of felony murder, second-degree kidnapping and robbery. The charging documents also allege that Jessica was a victim of sexual assault and that her attacker used force during the assault.

This image provided by the Westminster Colorado Police Department shows 10-year-old Jessica Ridgeway. Police in Westminster are looking for a 10-year-old
This image provided by the Westminster Colorado Police Department shows 10-year-old Jessica Ridgeway. Police in Westminster are looking for a 10-year-old girl who was last seen walking to school. Jessica Ridgeway normally meets a friend at a park on her way to Witt Elementary School, but she didn't make it to the park or school Friday Oct. 5, 2012. An Amber Alert has been issued. (AP Photo/Westminster Colorado Police Department)

In the case of the adult jogger, the six counts include attempted first-degree murder, attempted kidnapping and attempted sexual assault.

Chief District Judge Stephen Munsinger gave public defenders seven days to file a request for a reverse transfer hearing, which would determine whether Sigg's case would be returned to juvenile court.

Public defender Mitch Ahnstedt said he would seek a transfer to juvenile court.

Family members of Sigg cried when he was led into the courtroom in a green jail jumpsuit and shackles.

The county took extraordinary security precautions. Sigg was surrounded by Jefferson County sheriff's deputies. A total of 15 deputies guarded the entrance to the courtroom and the courtroom itself. One deputy stood directly in front of the Sigg family and stared at them throughout the hearing.


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Media members were required to undergo a second security check before entering the courtroom. Deputies took lids off felt pens during a search of media possessions.

Ridgeway's family and friends sat on the opposite side of the courtroom and were dressed in purple, which was her favorite color.

District Attorney Scott Storey said last week that charging Sigg as an adult is "the right thing to do." He added, however, that seeking the death penalty is not a consideration because of U.S. Supreme Court rulings. Likewise, a sentence of life without parole is not an option for those under the age of 18.

Austin Reed Sigg (Westminster Police Dept.)
Austin Reed Sigg (Westminster Police Dept.)

Storey did not comment following Tuesday's hearing. The case is under a gag order.

Sigg, an Arapahoe Community College student, faces up to 40 years in prison. Storey has said the evidence against the teen, who law enforcement sources say confessed and has been tied to the case through DNA, is overwhelming.

Jessica was kidnapped on her way to school on Oct. 5. Part of her body was found five days later in a field.

Authorities have also said that Sigg's first known attack was against a woman who was jogging around Ketner Lake, also near Sigg's home, in May.

Documents in the case have been sealed.

The next court date has been set for Nov. 27