A teenager who lived just a mile from a 10-year-old Colorado girl who was abducted and killed earlier this month has been arrested in her death, along with a May attack on a runner, authorities said Wednesday.  Click “more” below for details.

DJ Matthew Tyler

Police said they took 17-year-old Austin Reed Sigg into custody on Tuesday night after receiving a phone call from his mother.

Reached by phone, Sigg’s mother told The Associated Press he turned himself in.

Police announced the arrest as agents searched the home of Sigg, a student at Arapahoe Community College.  Court documents have been sealed, but a police custody report said Sigg was cooperative when he was arrested and waived his rights.

Jessica Ridgeway disappeared Oct. 5 while walking to school. Her remains were found five days later in a field at a park, and police said her body was “not intact.”

The arrest case came a day after police said Jessica’s abduction was linked to the May 28 attempted kidnapping of a 22-year-old runner at another area park, the Ketner Lake Open Space.

In that case, a woman fought off a stranger who grabbed her from behind and put a rag that smelled of chemicals over her mouth, authorities said. Westminster investigator Trevor Materasso said Tuesday police haven’t been able to determine if the substance on the rag was meant to subdue the woman.

Authorities didn’t say why they think the two cases are connected, but they noted Sigg will be charged in both crimes. His first court appearance is set for 8 a.m. Thursday.

Source: Yahoo!