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.

A high level of carbon monoxide was detected in 14-year-old Miller Gardner's hotel room, Costa Rican Police revealed.

Toxicology results have finally confirmed the cause of death of New York Yankees star Brett Gardner’s son Miller. Authorities announced Wednesday that the 14-year-old died from carbon monoxide inhalation while vacationing with his family in Costa Rica.

Miller Gardner, the youngest son of former New York Yankees outfielder Brett Gardner, died March 21​ at the age of 14 while on vacation with his family.

Miller Gardner, the 14-year-old son of former Yankees outfielder Brett Gardner, may have died from abnormal levels of carbon monoxide.

The 14-year-old son of former Yankees star Brett Gardner died in the hotel last month while on vacation with his family.

The death of former New York Yankees outfielder Brett Garner's son is now being investigated as a possible carbon-monoxide poisoning, investigators said Monday. Gardner's son, 14-year-old Miller, died in March during a family trip to Costa Rica.

The Costa Rican hotel where New York Yankee star Brett Gardner’s 14-year-old son, Miller Gardner, died has issued a statement after authorities reported that carbon monoxide was found in his family’s hotel room.

Miller Gardner, 14, died in his sleep on March 21 after he fell ill during a vacation in Costa Rica, according to a statement by Brett Gardner and his wife, Jessica.