The death of former New York Yankees outfielder Brett Gardner's son is now being investigated as a possible carbon-monoxide poisoning, investigators said Monday. Gardner's 14-year-old son, 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.

Brett Gardner and his wife Jessica remembered their late son, Miller, who died during a trip to Costa Rica, in a touching obituary published by the 'Post and Courier' on March 29.