Officials say skeletal remains have been recovered in South Dakota's oldest cold case.
On May 29, 1971, Pam Jackson and Sherri Miller were on their way to an end of the school year party at a Union County gravel pit but they never made it.
On Monday, their car was discovered a half mile away in Brule Creek, right by a bridge.
Attorney General Marty Jackley, Union County Sheriff Dan Limoges and Union County State's Attorney Jerry Miller confirm that the site of the recovered vehicle in Union County has been processed and items of potential evidence have been preserved. The site has been released by law enforcement.
Items from the site will be tested and evaluated. Agencies assisting in this investigation are the Union County Sheriff's Office, Clay County Sheriff's Office, Vermillion Police Department, South Dakota Highway Patrol, Beresford Fire and Rescue, Department of Transportation, Union County Highway Maintenance, Pollman Excavation and Division of Criminal Investigation.