“The Cosby Show” alum Malcolm-Jamal Warner has died. He was 54. The Jersey City native, who was best known for portraying Theodore Huxtable on “The Cosby Show,” drowned off the coast of Costa Rica on Sunday, July 20, per ABC News.

PEOPLE has confirmed that the other person involved in the incident did not have a personal relationship to Warner, but entered the water in an effort to save him

Jamal Warner died unexpectedly this week, shocking the world. Columnist Preach Jacobs writes about Theo Huxtable and Malcom impact.

Malcolm-Jamal Warner’s “Cosby Show” family is mourning his death. Warner died at age 54 on Sunday, July 20, after drowning near a beach in Limón, Costa Rica. The actor was best known for playing Theodore Huxtable on all eight seasons of “The Cosby Show,” which aired from 1984-1992.

Malcolm-Jamal Warner played “The Cosby Show’s” Theo Huxtable with a charismatic mix of bravado, innocence and hysteria.

HUNTER SPEAKS… The famous actor is best known for playing the character Theodore Huxtable on “The Cosby Show,” alongside Bill Cosby, Phylicia Rashad, Tempestt Bledsoe and Lisa Bonet. TMZ first reported Warner’s death.

Hey there New Jersey! Here’s your audio update highlighting a minor earthquake which originated in Morris Plains that rattled he state and the death of Jersey City native Malcolm-Jamal Warner, known for his role as Theodore Huxtable on “The Cosby Show.