Malcolm-Jamal Warner, best known for his role as Theodore Huxtable on "The Cosby Show," has died at 54.

Malcolm-Jamal Warner the actor who played teenage son Theo Huxtable on “The Cosby Show,” has died at age 54 in an accidental drowning in Costa Rica, authorities there said.

Mr. Warner apparently drowned while swimming at a beach on the Caribbean coast of Costa Rica near Limón, according to the country’s Judicial Investigation Department.