(FILES) In this file photo taken on March 15, 2018 The CEO of the German carmaker Audi AG, Rupert Stadler attends the annual press conference at the headquarters in Ingolstadt. Audi chief executive Rupert Stadler was arrested on June 18, 2018 in connection with parent company Volkswagen's "dieselgate" emissions cheating scandal, with prosecutors saying they feared he might try to destroy evidence. / AFP PHOTO / CHRISTOF STACHE