The death of former New York Yankees outfielder Brett Gardner's son is now being investigated as a possible carbon-monoxide poisoning, investigators said Monday. Gardner's son, 14-year-old Miller, died in March during a family trip to Costa Rica. The Gardner family announced his death in a statement released by the Yankees two days later.

Tests revealed that the room Miller Gardner, 14, the son of former New York Yankees outfielder Brett Gardner, stayed in while on vacation in Costa Rica had high levels of carbon monoxide, Rándall Zúñiga, the director of Costa Rica's Judicial Investigation Agency, OIJ, said in a statement posted to YouTube on Monday.

Carbon monoxide poisoning is believed to be the reason behind the death of the son of a former Yankees star, according to officials. It unintentionally kills hundreds of Americans each year. Tests revealed that the room Miller Gardner,

Officials in Costa Rica have released the body of 14-year-old Miller Gardner — the son of former New York Yankees player Brett Gardner — to his family. According to The New York Post, Costa Rican Judicial Investigations Police confirmed that Miller's body was released to his parents on Wednesday,

This undated photo posted by the New York Yankees on the social media site X shows 14-year-old Miller Gardner, the son of former Yankees players Brett Gardner, who died, Mar. 21, 2025, from a sudden i