Brazilian former chief-of-staff (2003-2005), Jose Dirceu (C) arrives for a parliamentary committee of the Petrobras investigation hearing in the Federal Justice court, in Curitiba on August 31, 2015. Dirceu --who is serving a seven-year sentence for the Mensalao corruption scandal-- was accused of corruption and money laundering within the framework of the Lava Jato operation.    AFP PHOTO / HEULER ANDREY        (Photo credit should read Heuler Andrey/AFP/Getty Images)