A decades-old mystery in Washington State has finally been solved after investigators identified human remains that had remained unnamed for nearly 25 years.
According to Fox News, the National Park Service announced that skeletal remains discovered in Olympic National Park in 2000 belonged to Joseph Louis Serrao Jr., a Hawaii native whose family had not heard from him since 1998.
The identification marked the end of a case that had baffled investigators for decades.
“This case remained unresolved for nearly 30 years, but investigators never lost sight of the goal of identifying this individual and finding answers for his family,” Debra Flowers, deputy chief of the National Park Service Investigative Services Branch, said in a statement.
“I’m proud of the persistence and collaboration that made this identification possible, and I hope it brings some measure of closure to those who have spent so many years wondering what happened to Joseph.”
The case began in July 2000 when a researcher came across skeletal remains inside a sleeping bag located in a tent in the Sol Duc River drainage area of Olympic National Park.
The remote location sits on Washington State’s Olympic Peninsula.
Investigators recovered several personal items from the campsite, including binoculars, a backpack, a shoulder bag, a folding saw, a blanket, and winter clothing.
A medical examiner concluded the remains likely belonged to a man between 30 and 50 years old. Despite extensive efforts, authorities were unable to determine who he was.
The Washington State Patrol Crime Laboratory examined evidence collected at the scene, but investigators were unable to obtain usable fingerprints.
The case remained open for years with no breakthroughs.
That changed when investigators turned to advanced DNA testing in an effort to locate possible relatives.
The testing eventually led authorities to Serrao’s family.
Family members told investigators they had not been in contact with Serrao since 1998.
According to officials, Serrao was originally from Hawaii and had been living in Washington before he disappeared.
Investigators later compared DNA samples provided by family members to the remains and confirmed the match.
The identification closes one of Olympic National Park’s longest-running unidentified remains investigations.
While authorities have now determined who the remains belonged to, the announcement focused on providing answers to Serrao’s family after decades of uncertainty about what happened to him.