According to officials, Warner drowned after being caught in a powerful rip current off the coast of Playa Grande in Costa Rica’s Limón province. Despite efforts by bystanders and emergency responders to administer CPR, Warner was pronounced dead at the scene on Sunday, July 20.

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.