Three American women, ages 23 through 26, were found dead at the Royal Kahal Beach Resort in Belize last month.

Arar, 26 — all from Revere, Mass. — were found dead inside their room at the Royal Kahal Beach Resort in San Pedro on Feb. 22.

The cause of the deaths of Kaoutar Naqqad, Imane Mallah and Wafae El-Arar has been determined just over a month after they were found dead in their Belize hotel on Saturday, Feb. 22.

The families said U.S. Embassy officials told them the women “passed away as a result of acute carbon monoxide poisoning, likely caused by a faulty instant water heater.” The post Families of Revere women found dead in Belize hotel room speak out after learning cause of their deaths appeared first on Boston.

The Belize National Forensics Science Service executive director, Gian Cho, said Thursday that carbon monoxide poisoning killed three American women found dead while at a vacation resort there in February. Kaoutar Naqqad, Imane Mallah and Wafae El-Arar were found dead on Saturday, Feb. 22 while on vacation in Belize

Belize's National Forensic Science Service confirmed that the three Massachusetts women who were found dead in their hotel room died of carbon monoxide poisoning.

Belize police originally listed their deaths as "acute pulmonary edema." While toxicology tests found no drugs in the women's bodies, fatal levels of carbon monoxide poisoning were found.

The women’s families issued a statement saying they had been notified by officials in the Central American country Wednesday who told them the women died from “acute” carbon monoxide poisoning, likely from an instant hot water heater.