The families of the three women found dead in Belize revealed the cause of their deaths in a new statement. The U.S. Embassy notified the families that 23-year-old Kaoutar Naqqad, 26-year-old Wafae El-Arar and 26-year-old Imane Mallah died from acute carbon monoxide poisoning, according to a statement obtained by Boston 25 News.

Revere mayor Patrick Keefe called the women’s deaths an “unimaginable loss,” adding their families “deserved the truth.”