It's a bizarre case still haunting investigators 14 years later. A teenager dies on a Kentucky interstate after police say someone stole a tombstone, threw it off an overpass, and into the car a teen was riding in.

Investigators think it may have been a prank, but no one has ever been arrested for a crime that left one person dead. They're still determined to find the person responsible.

Just a couple of weeks before Halloween in 1995, authorities were investigating a bad crash on I-75 in Rockcastle County.

"There was a grave marker that was thrown from the overpass at the 55 mile marker on I-75 around 2:00 in the morning", says Sgt. Jesse Owens with Kentucky State Police.

A tombstone taken from an area cemetery was tossed off the bridge, going into a van and killing 17-year-old Stephanie Kuhar from Michigan, who was riding with her family.

"It was probably meant as a prank, you know, this time of year with Halloween. It was a tragedy. A young girl lost her life", says Sgt. Jesse Owens.

"It's sad in my opinion", says local resident John York.

"They never did catch who did it", says local resident Ed Baker.

For years people tossed out ideas of who the person responsible could be.

"Nobody knows if it was kids or grown-ups really. It could have been school kids or something like that", says Ed Baker.

"They worked on this case pretty hard at the time, but it's went cold and we ask for the public's help", says Sgt. Jesse Owens.

More than a decade after the horrible crime police continue to look into this case that people continue to wonder about.

"I can't see how they sleep with it. They may not have known they hurt somebody. They just threw it over the wall of the bridge and it hit that car", says Ed Baker.

If you have information about this case, you're asked to call the KSP London post at (606) 878-6622.