The 14-year-old had 64% saturation of carboxyhemoglobin in his blood. The deadly level is 50%, officials said.

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 ...

Asphyxiation was initially thought to have caused the 14-year-old's death, but after an autopsy that theory was ruled out.

The death of the teenage son of former Yankees player Brett Gardner was caused by carbon monoxide poisoning, officials in ...

(NEXSTAR) – Carbon monoxide poisoning was the cause of death of the teenage son of former New York Yankees outfielder Brett ...

Authorities in Costa Rica have revealed the cause of death for the 14-year-old son of former New York Yankees star Brett ...

Costa Rican authorities believe Brett Gardner's 14-year-old son Miller died as a result of carbon monoxide poisoning. Randall Zúñiga, director of the Judicial Investigation Agency in Costa Rica, said ...

The baseball world continues to mourn with former Yankees star Brett Gardner and his family following the heartbreaking loss ...

The 14-year-old son of former Yankees outfielder Brett Gardner died last month of carbon monoxide inhalation, a toxicology ...