Robert Bell Wallace, 67, from California fell ill and died at the Hard Rock Hotel & Casino resort in Punta Cana, on April 14. The man chose to go to the hospital on April 13 and died the next day. Arnold said her uncle was in good health and had just gone skiing in Lake Tahoe a month prior.
What's even weirder? Several of the deaths have occurred at the same resort.
At the same Hard Rock resort past year, another American man died under similar circumstances, the man's wife said.
Dominican authorities said a preliminary autopsy found that Holmes and Day suffered respiratory failure and pulmonary edema, caused by excess lung fluid. Schaup-Werner was staying at the Bahia Principe La Romana when she suffered a heart attack. Five days later, a Maryland couple was found unresponsive in their rooms at a hotel on the same resort.
The famous investor said her brother's friend discovered his body in their suite, but nobody knows exactly what happened.
What was once a carefree decision on a Caribbean vacation - a trip to the Dominican Republic - has become something of a nightmare for Americans contemplating a trip to the island.
They will send experts to conduct tests at the Bahia Principe hotels where Schaup-Werner, Holmes and Day died.
The news surrounding Wallace's passing comes following reports of other mysterious deaths at resorts on the island. But Felecia Nieves, Sport's sister, questions that.
"When all these people started passing, I stopped and thought to myself, 'How can all these people have the same cause of death as David?' " she told The Washington Post.
Tickenoff added that Dominican authorities told the family that they would receive Wallace's toxicology reports by the end of this month - around the same time they plan on holding a private memorial for him.
Kaylynn Knull said she and her boyfriend enjoyed their vacation until they noticed their room beginning to smell of chemicals.
On Monday, the U.S. State Department confirmed a fourth American tourist died suddenly at a Dominican Republic resort.