The Yankton Police Department still considers the death of Tammy Haas an open case.
Lt. Todd Brandt, Yankton Police said, "Anybody who has a loved one taken from them deserves to have that information brought to them as to what happened."
While Tammy's body was found in Cedar County, Nebraska, she was reported missing in Yankton, South Dakota. That's why several agencies from both states have been involved with this case from the very beginning.
With recent breakthroughs in other cold cases, it gives investigators hope that they too will get the answers they've been looking for. That's if someone steps forward.
"We believe there is that one person or persons that have knowledge about what happened. We would ask that those people or person with that information, come forward with the authorities and bring closure to this case," said Lt. Brandt.
If you have any information in this case, you're asked to contact law enforcement.