The Cosby Show alum Malcolm-Jamal Warner died on Sunday, July 20. He was 54. TMZ was the first to report the news on Monday, July 21. ABC News has since confirmed with Costa Rican National Police that Warner died in an accidental drowning near Cocles, a beach in Limon, Costa Rica, after being caught by a high current in the water. His cause of death was asphyxia. Us Weekly has reached out to Warner's team for comment. The late star played the role of Theodore Huxtable on The Cosby Show for all eight seasons from 1984 to 1992.