Celebrity deaths this week: From Malcolm-Jamal Warner to Ozzy Osbourne to Hulk Hogan - here are the stars world lost

Malcolm-Jamal Warner, the acclaimed actor best known for his role as Theo Huxtable on "The Cosby Show," tragically passed away at the age of 54. He drowned off the coast of Costa Rica while heroically saving his 8-year-old daughter from a rip current. Despite rescue efforts and resuscitation attempts, Warner's death was confirmed as unintentional asphyxiation from submersion.