Miller Gardner, the youngest son of former New York Yankees outfielder Brett Gardner, died at the age of 14 while on vacation with his family.
A new toxicology report found the 14-year-old South Carolina boy's body had carboxyhemoglobin level of 64%, which is 14% above what is considered lethal.
The former New York Yankees outfielder's 14-year-old son died on March 21 during a family vacation in Costa Rica.
Miller Gardner, the 14-year-old son of former New York Yankees outfielder Brett Gardner, is believed to have died as a result of carbon monoxide poisoning.
High levels of carbon monoxide were detected in 14-year-old Miller Gardner's hotel room, Costa Rican police revealed more than one week after the son of former New York Yankees outfielder Brett Gardner mysteriously died on a family vacation.
Officials in Costa Rica confirmed Wednesday that the official cause of death for 14-year-old Miller Gardner was carbon monoxide poisoning.
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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.