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.

Authorities in Costa Rica have released the official cause of death for New York Yankees player Brett Gardner’s 14-year-old son, Miller, the Associated Press reported. On Wednesday, April 2, it was ruled that Gardner’s son passed away due to exposure to carbon monoxide.

Authorities investigating the tragic death of Brett Gardner's teenage son Miller have suggested that he could have been killed by carbon monoxide