The death of Miller Gardner, the 14-year-old son of former New York Yankees outfielder Brett Gardner, at a beach resort in Costa Rica is believed to be related to carbon monoxide inhalation, the Judicial Investigation Agency (OIJ) of the Central American country said Monday.

After initially having disregarded it as a potential cause of death, Costa Rican officials said the teen son of former New York Yankees outfielder Brett Gardner may have died during family vacation as a result of carbon monoxide poisoning.