The movie, adapted by screenwriter Steven Zallian from the book 'I Hear You Paint Houses,' follows the life and exploits of hitman Frank "The Irishman" Sheeran. De Niro will play Sheeran, the trigger man who presumably killed Hoffa, according to the book.
De Niro also confirmed, to Showbiz411.com, that both Joe Pesci and Harvey Keitel are set for as-yet-to-be-announced roles in the film as well.