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.

Authorities in Costa Rica investigating the death of former New York Yankees outfielder Brett Gardner’s teenage son have concluded that he died of carbon monoxide poisoning. Miller Gardner, 14, was found dead on March 21 in his hotel room at the Arenas Del Mar resort in Manuel Antonio,

Brett Gardner's son Miller's cause of death has been confirmed by local authorities nearly two weeks after his death. Miller was in Costa Rica with family when he died on the morning of Friday, March 21.