Barbara Corcoran, a star of the reality TV show "Shark Tank", told TMZ that her brother recently died while vacationing at a resort in the Dominican Republic - one of several American tourists to sustain fatal or serious injuries there.
Corcoran told the outlet that her brother, who lived in New Jersey, where they grew up, had gone to the Dominican Republic with a friend on what was his annual vacation, TMZ said.
Her brother, John, died in his hotel room in the Dominican Republic in April, Corcoran said in a statement Thursday. He is one of nine siblings for Corcoran, TMZ said.
John is the seventh American tourist to be found dead in the Dominican Republic since last June and the family members of the others have suggested that the deaths are connected and are suspicious, according to the New York Times.
It is getting harder by the day for the Dominican Republic government to continue to hold onto the "isolated deaths" explanation for the rash of tourists suddenly dying at their luxury resorts.
"John Corcoran passed away at the end of April in the DR from what is believed to be natural causes", Emily Burke, Barbara's assistant, told Fox News. "Barbara would like to respect the privacy of his children and is not releasing any other information at this time".
Other couples who have stayed at the hotel have made claims stating that they got sick after drinking from their room's minibar and others described smelling chemicals in their room that they said were insecticides or pesticides, Fox News reported.
While John's death alone might not be alarming, the case is curiously similar to other mysterious tourist deaths in the country's hotels over the past year.
In the three most recent deaths, the victims' lungs filled with fluid and they died of respiratory failure. It is believed his death was the result of a heart attack.
The report noted that the "FBI's involvement has marked the first public indications that officials in the US and the Dominican Republic have considered the possibility of something other than natural causes". "Investigation into them is a top priority for us and for the National Police".
Five days before Holmes and Day were found dead, a Pennsylvania psychotherapist, Miranda Schaup-Werner, died in an adjacent hotel owned by the same luxury five-star Bahia Principe resort group.
"So this isn't a mystery to us", she said, adding, "It's just the sad loss of a father and grandfather who everyone is missing right now".