Beloved TV star Malcolm-Jamal Warner — best known for playing Theo Huxtable for all eight seasons of The Cosby Show from 1984 to 1992 — accidentally drowned at age 54 during a family vacation in Costa Rica,

Malcolm-Jamal Warner, an actor and artist who rose to fame as a child as Theodore Huxtable on “The Cosby Show,” died Sunday in a drowning accident in Costa Rica, according to local police.

Malcolm-Jamal Warner's cause of death has been released by police. The actor, who is best known for his role as Theo Huxtable in the hit TV sitcom "The Cosby Show," died on Sunday off the coast of Costa Rica after a drowning, Costa Rican National Police told ABC News. He was 54.