FBI toxicology results will soon be released as part of the investigation into the rash of tourist deaths in the Dominican Republic — as families have launched probes of their own, according to a new report.

Relatives of Miranda Schaup-Werner, 41, Nathaniel Holmes, 63, and Cynthia Ann Day, 49, have ordered their own autopsies following their mysterious deaths in May, the Washington Post reported.

A toxicology exam will additionally be performed on Holmes and Day, the engaged couple from Maryland who were found dead in their room at the Grand Bahia Principe La Romana on May 30, five days after checking in to the all-inclusive resort.

Schaup-Werner, from Allentown, Pennsylvania, who was staying next to the La Romana hotel in the Luxury Bahía Principe Bouganville, died on May 25 while having a drink from the room mini-bar with her husband.

Preliminary Dominican autopsies found that all three died of respiratory failure and pulmonary edema, or excess fluid in the lungs.

“The family wants to know the truth,” said Steven Bullock, the attorney for Holmes’ and Day’s families. “They don’t want investigations to be skewed. I’m not suggesting that would be the case, but they simply want to take no chances.”

The FBI has been assisting Dominican authorities in the investigation, which includes analyzing alcohol samples from one of the Bahia Príncipe resorts.

Results of the toxicology tests will be released in a few days, the Washington Post reported.