PARIS (Reuters) -- French prosecutors have stepped up their investigation into alleged misappropriation of funds at Renault by former boss Carlos Ghosn, saying a judge had now been assigned to the case to launch a formal investigation.
The prosecutor's office in Nanterre, on the outskirts of Paris, had since last year been looking into a party Ghosn had thrown for his wife at the sumptuous Versailles palace among other financial dealings.
