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.

A blood test for carbon monoxide showed a saturation level of 64% in Gardner’s body, Costa Rican officials said.

The New York Yankees star’s 14-year-old son was found dead in his hotel room during the family’s vacation in Costa Rica.

A toxicology report after his death found high levels of carboxyhemoglobin, an indicator of carbon monoxide in the blood, ...

After Brett Gardner’s son Miller Gardner was found dead during a vacation in Costa Rica, authorities confirmed that the 14-year-old died from exposure to poisonous gases including carbon monoxide.

Carbon monoxide poisoning was the cause of death of the teenage son of former New York Yankees outfielder Brett Gardner, authorities in Costa Rica confirmed Wednesday night.

Miller Gardner -- the 14-year-old son of former New York Yankees outfielder Brett Gardner -- died from carbon monoxide ...

Authorities in Costa Rica said that toxicology tests showed a lethal level of carbon monoxide saturation in his body.

The official cause of death for Miller Gardner has been revealed following a two-week investigation. Miller, the 14-year-old son of former New York Yankees player Brett Gardner, died in his sleep on ...

Officials in Costa Rica confirmed Wednesday that the official cause of death for 14-year-old Miller Gardner was carbon ...

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

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