Mystery Surrounds Death of Southern California Couple at Mexican Resort

Autopsies on two Americans found dead in their luxury hotel room in Baja California Sur, Mexico suggest they died of "intoxication by an undetermined substance." The bodies bore no signs of violence, and the exact cause of death is yet to be determined. The victims have been identified as Abby Lutz and John Heathco. 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.