Working with new information in the disappearance of Stacy Peterson, authorities are set to dig in search of her body Saturday in an area east of Peoria, sources said. Illinois State Police confirmed Saturday that they are currently following a lead in rural central Illinois regarding Peterson’s disappearance and have set up a media staging at a location near Peoria, according to an ISP release. The ISP Investigation team that has been investigating the disappearance and possible homicide of Stacy Peterson is aware of the situation and at the scene, the release said.