Leonardo DiCaprio is in final negotiations to take on the role of religious cult leader Jim Jones in the upcoming feature.

Written by Scott Rosenberg, the feature will focus on Jones,  the leader of the Peoples Temple religious group, and the mastermind behind the November 1978 mass suicide at his Jonestown settlement that took more than 900 lives. The massacre, which took place at the jungle commune in Guyana, was induced via a cyanide-adulterated punch.

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DiCaprio is producing the project alongside Jennifer Davisson for their Appian Way production company. Rosenberg (“Venom,” “Jumanji: Welcome to the Jungle” and “Jumanji: The Next Level”) is also on board as an executive producer.

DiCaprio will next star opposite Jennifer Lawrence, Jonah Hill, Timothée Chalamet, Meryl Streep and Ariana Grande in Adam McKay’s ‘Don’t Look Up’ for Netflix and in Martin Scorsese’s ‘Killers of the Flower Moon’ for Apple Originals Films.

Appian Way’s film slate includes Alejandro González Iñárritu’s ‘The Revenant’, Martin Scorsese’s ‘The Wolf of Wall Street’ and George Clooney’s Golden Globe-nominated ‘The Ides of March.’ It is currently in production on ‘Shining Girls’ for Apple+ starring Elizabeth Moss.