A couple from Tennessee have been named as the other two Americans found lifeless at Sandals Emerald Bay Resort in Exuma, alongside a 64-year-old man from Florida.
Police Commissioner of the Bahamas Paul Rolle identified the couple as Robbie Phillips, 65, and her husband Michael Phillips, 68.
The couple, who worked as travel agents, were vacationing at the resort when they were found dead in their room.
Vincent Paul Chiarella, 64, from Florida also died from a mysterious illness. His wife, Donnis, was airlifted to a Florida hospital, where she remains in critical condition.
Bahamian officials are now sending samples obtained from their remains, and also those from the rooms where they were staying, to a laboratory to help determine the cause of death.
The American labs will determine whether there are contaminants present in their rooms and surrounding areas when they tragically died.
Rolle said on Monday: “We really want to know what caused this,” adding that the results will be ready in about a week.
When asked what he thought might have caused the deaths, he said: “I’m not going to speculate.”
He also said that all four tourists visited a doctor the night before their bodies were found, complaining of feeling ill.
Bahamian officials have said that none of the tourists showed signs of trauma. Foul play is also not suspected.
The couple’s grieving son Austin Chiarella previously told ABC News that the tourists have suffered from convulsions before their tragic deaths.
When Donnis from Florida woke up, she found herself paralyzed and her late husband unresponsive.
“’She woke up and my dad was laying there on the floor, and she couldn’t move,” he said.
“Her legs and arms was swollen and she couldn’t move and she screamed to get someone to come in the door.”
The investigation is still ongoing. The US State Department officials said that it is “closely monitoring local authorities’ investigation into the cause of death.”
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