Prior to Landau’s death, he was heavily involved in the production of the forthcoming Avatar sequels. Cameron’s sci-fi franchise is expected to include five more films.

“Jon was a visionary whose extraordinary talent and passion brought some of the most unforgettable stories to life on the big screen. His remarkable contributions to the film industry have left an indelible mark, and he will be profoundly missed,” Alan Bergman, Disney Entertainment co-chairman, said in a statement on Saturday. “He was an iconic and successful producer yet an even better person and a true force of nature who inspired all around him.”