A toxicology report reveals lethal levels of carbon monoxide was present in his system.
Tragic Loss: Ex-Yankee Brett Gardner’s Son Dies from Carbon Monoxide Poisoning

Tragic Loss: Ex-Yankee Brett Gardner’s Son Dies from Carbon Monoxide Poisoning
Miller Gardner, aged 14, recently passed away during a family vacation in Costa Rica due to carbon monoxide poisoning, authorities confirm.
Miller Gardner, the 14-year-old son of former New York Yankees player Brett Gardner, tragically passed away from carbon monoxide poisoning while on vacation with his family in Costa Rica last month, according to officials. Costa Rican authorities revealed on Thursday that a toxicology report indicated high levels of carboxyhemoglobin—an indicator of carbon monoxide in the blood—was present, with a saturation level of 64 percent, which is considered lethal.
Randall Zúñiga, the director of the Costa Rica Judicial Investigation Agency, stated that other tests, including those for drugs, returned negative results, while an autopsy confirmed symptoms of carbon monoxide poisoning. Zúñiga mentioned that the investigation into Miller's death could now be deemed closed.
The Gardner family was vacationing at a resort in Manuel Antonio, Costa Rica, when tragedy struck. In a statement issued through the New York Yankees last month, the family reported that Miller "fell ill along with several other family members" and passed away peacefully in his sleep on March 21.
Authorities indicated in a press conference that Miller’s family room was adjacent to a machinery area, suggesting possible contamination of their living space. A request for comment from the resort, Arenas Del Mar Beachfront & Rainforest Resort, went unanswered following the toxicology results.
Miller Gardner was described by his family as a devoted fan of football, baseball, golf, hunting, and fishing, cherishing moments spent with family and friends. Brett Gardner, who spent his entire major league career with the Yankees from 2008 to 2021, was an integral part of the 2009 World Series championship team. Now residing in South Carolina with his wife Jessica and their older son Hunter, the Gardners are facing an unimaginable loss in their family.
Jonathan Wolfe contributed to this report. Victor Mather has been with The Times for 25 years, focusing on sports and breaking news.
Randall Zúñiga, the director of the Costa Rica Judicial Investigation Agency, stated that other tests, including those for drugs, returned negative results, while an autopsy confirmed symptoms of carbon monoxide poisoning. Zúñiga mentioned that the investigation into Miller's death could now be deemed closed.
The Gardner family was vacationing at a resort in Manuel Antonio, Costa Rica, when tragedy struck. In a statement issued through the New York Yankees last month, the family reported that Miller "fell ill along with several other family members" and passed away peacefully in his sleep on March 21.
Authorities indicated in a press conference that Miller’s family room was adjacent to a machinery area, suggesting possible contamination of their living space. A request for comment from the resort, Arenas Del Mar Beachfront & Rainforest Resort, went unanswered following the toxicology results.
Miller Gardner was described by his family as a devoted fan of football, baseball, golf, hunting, and fishing, cherishing moments spent with family and friends. Brett Gardner, who spent his entire major league career with the Yankees from 2008 to 2021, was an integral part of the 2009 World Series championship team. Now residing in South Carolina with his wife Jessica and their older son Hunter, the Gardners are facing an unimaginable loss in their family.
Jonathan Wolfe contributed to this report. Victor Mather has been with The Times for 25 years, focusing on sports and breaking news.