Nearly two weeks after New York Yankees star Brett Gardner suddenly and tragically lost his teenage son, Miller, the teenager's mysterious cause of death has of

SAN JOSE, Costa Rica (AP) — 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 Wednesday night.

Asphyxiation has been ruled out as the cause of death for Miller Gardner, the 14-year-old son of former New York Yankees outfielder Brett Gardner, Costa Rican officials told CNN on Tuesday.