Journalist and professor Candace Kelley, who hosted the Not All Hood (NAH) podcast with the late 'Cosby Show' actor, opens up to PEOPLE about her memories of Malcolm-Jamal Warner, calling him a man who was hilarious,

The actor was swimming with his 8-year-old daughter in Costa Rica when surfers nearby noticed the pair struggling in the water.

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.