Hollywood heavyweights Leonardo DiCaprio, Robert De Niro and Martin Scorsese are eyeing a film adaptation of David Grann's just-published book -- Killers of the Flower Moon: The Osage Murders and the Birth of the FBI.

The non-fiction work, which just hit bookshelves, documents the true crime story of what happened to members of the Osage Indian tribe in Oklahoma after they found oil on their lands during the 1920s. Instantly becoming the richest people in the world, their sudden and mysterious deaths led to a conspiracy, which brought the involvement of the federal government and particularly the rise of J. Edgar Hoover who led the investigation, and eventually became the first director of the Federal Bureau of Investigation (FBI).

While it's still at an early stage of development, all three have yet to confirm about the project. However, both De Niro and Scorcese are currently working together on The Irishman with Netflix.

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