Ghosn also took aim at Nissan's current management, blaming them for three profit warnings and a domestic scandal involving improper vehicle inspections since his departure as CEO in 2017.
The lack of leadership is "very sickening", Ghosn said.
PHYSICAL, MENTAL PRESSURE
Ghosn's second stint at the Tokyo detention centre comes after he served 108 days following his first arrest last year.
Prosecutors are acting in a "cruel way" and putting him under intense physical and mental pressure to get a confession, Hironaka told reporters.
A spokeswoman at the Tokyo prosecutors office said she was unaware of Hironaka's comments and declined to comment.
Hironaka has previously criticised the move by prosecutors to confiscate Ghosn's belongings, including his mobile phone and trial documents, along with the mobile phones and Lebanese passport of his wife, Carole, who was present when prosecutors entered their home early in the morning last Thursday.