WENATCHEE, Wash. -

Police in Wenatchee have reopened the 1975 case of a 24-year-old East Wenatchee man who went missing and is believed to have been murdered.

The Wenatchee World reports that Erma Collier and her children contacted police this winter to ask about the case of her son, Tony Collier. His body was never found.

Police this spring contacted two retired detectives who worked the case initially, hoping to shed new light on the department's oldest unsolved case.

A suspect in the case died in 2011, and no new evidence has turned up.

But Sgt. Jim West says he hopes getting the story out will encourage someone who knows something to come forward. He says the goal is to find Collier's remains so the family can bury him.