Miller Gardner, a 14-year-old vacationing in Costa Rica, likely died from carbon monoxide poisoning, with investigations ongoing into high levels of the gas found in his hotel room, authorities confirmed.

The tragic death of Miller Gardner, who passed away on March 21, 2025, while staying at the Arenas Del Mar Beachfront & Rainforest Resort, has prompted investigations involving Costa Rican authorities and the FBI, particularly as initial theories of food poisoning have been downplayed. High levels of carbon monoxide were detected in his hotel room, potentially linked to a specialized machine room nearby, raising concerns about safety standards in tourist accommodations.

As investigations unfold, the focus continues to be on the circumstances leading up to Miller's death. Authorities discovered high levels of carbon monoxide in the hotel room where he was staying with his family. This discovery has prompted further scrutiny of the conditions in which guests are housed and the measures in place to ensure their safety. Carbon monoxide is often referred to as a silent killer due to its odorless and colorless properties, making it particularly dangerous in enclosed spaces.

Miller's family reported experiencing symptoms consistent with carbon monoxide poisoning before his death. They noted feeling ill leading up to the tragedy, which raises questions about the air quality in the hotel and whether the family may have been exposed to hazardous conditions. The debriefing of the family is a critical part of the ongoing investigation, as their experiences may offer insights into the timeline and potential exposure levels.

The specialized machine room adjacent to Miller's hotel room has drawn attention from investigators, who are looking into whether it contributed to the carbon monoxide contamination. Facility management and maintenance records may be evaluated as part of this inquiry. Understanding the operation of that room and its potential emissions will be crucial in determining liability and addressing underlying safety issues within the resort.

The FBI, along with Costa Rican authorities, is coordinating to ensure that the investigation is thorough and comprehensive. This collaboration may help engage federal resources to better analyze the circumstances of the incident and any potential regulatory violations. Authorities have revealed that they will conduct a detailed examination of the resort's safety protocols and any prior incidents reported at the facility.

While the autopsy report is still pending, Costa Rican officials indicated that it may take two to three months to finalize, prolonging the uncertainty for the Gardner family. Until the report is released, the exact cause of death remains speculative. The comprehensive examination of Miller's body, combined with findings about the carbon monoxide levels, will inform the final ruling on the cause of death.

Initial theories regarding Miller's death centered around food poisoning, but investigators have since downplayed this hypothesis in light of the evidence regarding carbon monoxide exposure. As the narrative surrounding his health shifts, it highlights the importance of accurate diagnoses in medical settings. The relationship between symptoms experienced by the Gardner family and the eventual findings serves as a reminder of the complexities involved in cases of suspected poisoning.

The Gardner family has expressed their heartbreak following the loss of their son, with family member Brett Gardner stating, "We are devastated by the loss of our beloved Miller. We are seeking answers and justice for our son." Their call for accountability emphasizes the emotional turmoil experienced not just from the loss but from lingering questions about safety and what, if any, measures could have been taken to prevent this tragedy.

As investigators continue to look deeper into the circumstances surrounding Miller Gardner's untimely death, the case emphasizes the need for vigilance in ensuring the safety of vacationing families. The investigation is being coordinated with the FBI, and Costa Rican authorities are continuing the investigation into the cause of death. It remains to be seen how findings from this investigation will unfold in the future.