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 Gardner family announced his death in a statement released by the Yankees two days later.
Miller's cause of death was initially unclear. The Gardner family said Miller and several other family members fell ill on the trip. Early reports suggested asphyxiation as a cause of death, though it was determined Miller's airways were not blocked.