https://www.cnet.com/roadshow/news/carlos-ghosn-resigns-chairman-ceo-renault/

Ghosn has been in detention since his arrest in November.

Nissan allegedly uncovered Ghosn's "unique" accounting methods with the help of a whistleblower. The automaker claimed its internal investigation uncovered underreported compensation from both Ghosn and Nissan representative director Greg Kelly, in addition to other misconduct like personal use of company assets. Ghosn was arrested by Japanese authorities and has been held ever since. It's believed that Ghosn underreported tens of millions of dollars in income.