The father of a Clemson student who disappeared 20 years ago said the missing man has been declared legally dead.
John Knapp said he and his ex-wife went through the process to declare Jason Knapp legally deceased.
"After 20 years it is still hard after losing your only child.," John Knapp said Friday.
The Pickens County Sheriff's Office said Knapp was a mechanical engineering student at Clemson University. He was last seen April 11, 1998, when he left his home to go out to eat around 10 p.m.
The sheriff's office shared a side-by-side photo of Jason Knapp when he disappeared back in 1998 and an age progressed photo, provided by the National Center for Missing & Exploited Children, showing what he may have looked like in 2015. look like in 2015.
Knapp's mother contacted York First Church of the Brethren in York, PA - the church confirmed they are having a viewing and memorial service for Jason Knapp on April 14. Visitation will be held from 2 p.m. to 3 p.m., and then service at 3 p.m.
"I believe it will be difficult," John Knapp said of the upcoming service. "When I talk about it I still get upset. It’s just something that doesn’t go away."
John Knapp said the family will also travel to South Carolina and hold a private service at Clemson University on April 21. He said about 50 people are expected to attend.
PREVIOUS COVERAGE: Deputies turn to social media for new clues in missing persons' case
Copyright 2018 FOX Carolina (Meredith Corporation). All rights reserved.