Robyn Gardner, a 35-year-old Maryland woman, has vanished from Aruba after taking a snorkeling trip with a friend, according to MyFoxDC.
Her disappearance comes six years after Alabama teen Natalee Holloway vanished from the same resort town, sparking a massive search.
A man she was with, Gary Giordano of Frederick, Md., reportedly told police they took a snorkeling trip – and Gardner never returned to shore.
Giordano has not been arrested, but was detained as he tried to leave the island and has reportedly changed details of his story at times.
Gardner's boyfriend of two years, Richard Forester, has pleaded for help in locating his girlfriend and says he is skeptical about Giordano's story.
She has been missing for six days.
"I want to let people know this is going on," Forester told the station. "Every day she's gone raises fear that she won't be coming back."
That information comes, appropriately but sadly, from the Natalee Holloway Resource Center. Anyone with information on Gardner's location can contact Fred Panneflek with the Aruban authorities at 011-297-597-5201.
The case has similarities to that of Holloway, who disappeared without a trace in 2005 while she was on a school trip with her graduating class.
Holloway was last seen leaving an Oranjestad bar called Carlos 'n Charlie's in the company of a Dutch boy, Joran van der Sloot, now 24.
He is currently in jail in Peru awaiting his fate in connection with the brutal murder of Stephany Flores, a 21-year-old business student.
Van der Sloot is expected to plead guilty to that murder, committed May 30, 2010, five years to the date of Natalee's disappearance.