NHK has learned that a document shows the conditions under which Carlos Ghosn was to make payments to a Saudi businessman as compensation for dealing with the former Nissan Motor chairman's personal investment losses.
Ghosn was re-arrested last week on suspicion of aggravated breach of trust. He was initially arrested for underreporting his pay.
Ghosn is freshly accused of having a Nissan subsidiary illicitly channel around 15 million dollars to the firm of Khaled Al-Juffali, who has a close link to the Japanese automaker.
Sources say the businessman helped Ghosn gain a credit guarantee by depositing about 27 million dollars to a bank in 2009.
The sources say that the total of about 15 million dollars was remitted to Al-Juffali's firm on four occasions as sales promotion expenses from a reserve fund that Ghosn could use at his discretion.
Ghosn's defense team said he denies the charges. He reportedly says Al-Juffali helped him with credit guarantee, but claims there is no reason to pay a reward of that amount because losses were not incurred on the money deposited by the Saudi businessman.
The defense team also quoted Ghosn as saying the payment was legitimate compensation for lobbying the Saudi royal family and other services.