California couple found dead in Mexico hotel room due to 'undetermined substance'

Two American tourists were found dead in their hotel room in Mexico, and autopsies suggest the cause of death to be "intoxication by an undetermined substance." The bodies of John Heathco and Abby Lutz were discovered in the village of El Pescadero, and the couple had been dead for 10 or 11 hours before they were found. The hotel has closed off the portion of the resort where the couple had stayed, and an investigation is ongoing.