An inmate of the Northeast Regional Corrections Center in Grand Lake Township near Twig walked off the grounds around 7:20 p.m. Tuesday, Aug. 23, according to a news release from the St. Louis County Sheriff’s Office. Zachary Daniel Mullen, 31, was missing for roughly four hours as deputies searched the area and sent alerts to surrounding agencies. Carlton County deputies located Mullen at about 11:25 p.m. and he has since been booked into the St. Louis County jail on a felony charge of escape from custody.