Mystery Substance Claims Lives of American Couple in Mexican Hotel

Autopsies suggest that Abby Lutz and John Heathco, the American couple found dead in their luxury hotel in Mexico, died of "intoxication by an undetermined substance." The bodies bore no signs of violence, and the exact cause of death is still being determined. The couple had been treated for what they thought was food poisoning days before their deaths. The U.S. Embassy in Mexico City has not confirmed the names or hometowns of the victims. Proper gas line installations, vents, and monitoring devices are often lacking for water heaters and stoves in Mexico, leading to several cases of such deaths due to poisoning by carbon monoxide or other gases.