WILLISTON -- An inmate escaped custody of the Williams County Correctional Center while being treated at the Mercy Medical Center emergency room in Williston, authorities said.
Preston Sonstegaard, who was being held on probation revocation charges, was last seen wearing black and white striped jail pants, no shoes and no shirt, the Williams County Sheriff's Office said.
Sonstegaard is a registered sex offender who is listed as low-risk, according to the state's sex offender registry. He was convicted in Williams County of continual sexual abuse of a child in 2009.
He is about 25 years old, 5-foot-6, 125 pounds and has blue eyes. The public is asked to immediately dial 911 if they see Sonstegaard.