The files associated with the deal portray Machado, who previously insisted he was innocent, as playing the role of a star informant who has described funnelling bribes to political parties as a core function of his job at the helm of Brazil’s largest shipowner.

While the former Senate leader’s accusations last month against politicians all the way up to Brazil’s former and current interim president have garnered headlines, the details of the tanker bribes have remained in the background.

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