The United States is warning those headed to Mexico about counterfeit or tainted alcohol after a woman in Wisconsin died.
The woman, Abbey Connor, is the most recent of many incidents involving vacationers becoming sick after drinking alcohol at Mexican resorts.
The Milwaukee Journal Sentinel reported the 20-year-old was pulled from a pool at an Iberostar resort near Playa del Carmen in January.
After the story was published, the paper got several people who got sick and experienced blackouts at resorts in Cancun and Playa del Carmen.
Iberostar released a statement saying it will cooperate with authorities.
"The safety and security of guests is utmost priority for us. We are deeply saddened by this incident and reiterate our deepest sympathies and condolences to the family."
The State Department made updates to Mexico's safety and security guidance on its website telling tourists to avoid excessive alcohol.
"There have been allegations that consumption of tainted or substandard alcohol has resulted in illness or blacking out. If you choose to drink alcohol, it is important to do so in moderation and to stop and seek medical attention if you begin to feel ill."
Mexico's tourism secretary, Marisol Venegas, says there have not been any complaints or criminal cases on the subject.
She says Mexico gets over 11 million tourists a year at more than 98,000 hotel rooms, and sticks to strict quality measures.