The death of Miller Gardner, the 14-year-old son of former New York Yankees outfielder Brett Gardner, remains under investigation, but possible asphyxiation has been ruled out, authorities in Costa Rica told ESPN on Tuesday.

A day after making the original pronouncement, that Gardner asphyxiated after falling ill from eating something, Costa Rican authorities say further forensic investigation ruled asphyxia out as a possible cause of death.

Asphyxiation ruled out as cause of death for 14-year-old Miller Gardner, the son of former New York Yankees player Brett Gardner.