A Pennsylvania couple thinks they may have found Natalee Holloway's skeleton on a vacation to Aruba.
Patti and John Muldowney want investigators to take a good look at a picture they took while snorkeling.
It shows what they think is a skeleton on the bottom of the ocean. [Scroll to bottom of page for picture].
Patti didn't notice anything out of the ordinary when she snapped the photo last November. No one noticed until mid January when they met up with a couple that was on the same cruise, to compare vacation photos.
"They came over and discovered it when they were looking through our photos," John Muldowney told NBC Philadelphia.
"You can see a fish. You can see some rocks. And then you can see this body lying on its back, facing up," John, 78, said in an interview with the Intelligencer Journal.
They showed the photo to friends, police, even a doctor and everyone agreed it looked like a human skeleton. John wondered if it could be the remains of Natalee Holloway, 18, who disappeared in 2005 during a high school graduation trip.
Van der Sloot's stories could not be confirmed by police and he was never charged in the case because Aruban prosecutors said they didn't have enough evidence.
John thought it couldn't hurt to send the photo to Holloway's family and investigators. He mailed a copy to her biological father and says he hasn't heard back.
John's efforts to get the picture to the right people connected to the case have been frustrating.
"I've called Quantico so much the receptionist said, 'We've got to stop meeting like this,' " he told the Intelligencer.
John sent the photo to the FBI in Philadelphia.
"We did receive that photo, and it was sent to the lead agent down in Miami who handles that area in the Caribbean," Special Agent Frank Burton Jr. told the Intelligencer.
John called the FBI again after hearing that van der Sloot's dad had died of a heart attack and that the case was being reopened after van der Sloot told a TV reporter another story, in which he disposed of Holloway's body in a swamp after she accidentally fell from a balcony.
"This time they told me, 'John, we're not allowed to tell you what we're doing with it,'" he said.
"The thing is, they haven't found her yet," Patti told the Intelligencer. "So, for the parents' sake, I would hope that this picture does help."