Three American women who were discovered dead in a Belize resort hotel room last month died from carbon monoxide poisoning, their families said. A joint statement this week from their families cites the U.S. Embassy in Belize and says the women died from "acute carbon monoxide poisoning, likely caused by a faulty instant water heater."

Authorities in Belize are taking a closer look at the possibility that carbon monoxide poisoning may have played a role in the deaths of three Americans last month.