Malcolm-Jamal Warner died at 54, with his official cause of death now being revealed. The actor was on a family vacation in Costa Rica when he died from an accidental drowning, the Judicial Investigation Agency (OIJ) confirmed to PEOPLE.

Investigators are calling the tragic drowning of Malcolm-Jamal Warner an accident and determined that he died by asphyxiation by submersion while on vacation with his wife and young daughter in Costa Rica. It comes as more co-stars from “The Cosby Show ...