Leyla Cox, 53, of New Brighton, New York, was found dead reportedly of a heart attack in her hotel room in June, according to her son William Cox, the Staten Island Advance reported.
"I am overwhelmed and confused and in shock," William Cox, 25, told the news outlet Thursday. "I have a right to be suspicious."
Leyla Cox joins a growing list of U.S. tourists who have died in the Dominican Republic under similar circumstances over the past year. She was vacationing alone, according to her son, having arrived on June 5 to celebrate her 53rd birthday. It is not known what hotel resort she was staying in.
"We can confirm the death of U.S. citizen Leyla Cox in the Dominican Republic on June 11. Out of respect for family members and loved ones we cannot comment further," a State Department spokesperson confirmed to Fox News.
Victims have been otherwise healthy, and some were reported to have had a drink from their hotel minibar before falling ill. Several deaths occurred in the Hard Rock Hotel & Casino Punta Cana and Bahia Principe resorts.
While an autopsy had been ordered for Leyla Cox, it is not known whether that would include a toxicology report. The family is waiting for her body to be released for transport back to the U.S., the Advance reported.
Other deaths include Robert Bell Wallace, 67, in April and Miranda Schaup-Warner, 41, and Maryland couple Edward Holmes, 63, and Cynthia Day, 49, in May. In addition, David Harrison, 45, and Yvette Monique, 51, passed away in 2018.
Additionally, the brother of "Shark Tank" judge Barbara Corcoran, Jonathan Corcoran, 60, passed away in April at an unknown resort, also of a heart attack, although no autopsy had been performed yet, TMZ reported Wednesday.
Comment: See also: What in the world is going on in the Dominican Republic? (Update)