In addition, the investigation has also confirmed that soon after the announcement in 2016 that Nissan and Mitsubishi Motors would forge a strategic alliance, Ghosn, former representative director Greg Kelly and others began to explore the possibility of paying undisclosed compensation to Ghosn through an equally-owned Netherlands-based unconsolidated joint venture between the companies.
The statement said the payment Ghosn received was "hidden" from Mitsubishi but was discovered through the disclosure of information by Nissan.
'Volumes progressed across nearly all our regions (in 2018), and we're entering 2019 with expectations for a slight increase in sales, ' Renault sales chief Olivier Murguet told reporters.
"From the time that the unit was established to when I was told about the payments, I had absolutely no idea that the unit was being used for such payments", Masuko added.
Ghosn, arrested and detained in Tokyo since November 19, has been indicted in Japan on charges of under-reporting his salary for eight years through March 2018, and temporarily transferring personal investment losses to Nissan Motor during the global financial crisis.
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Since his out-of-the-blue arrest on November 19, Ghosn has been kept in a Tokyo detention centre and has made only one public appearance in court when he passionately rejected the accusations against him. He was the chairman of both Nissan and Mitsubishi but was removed from the positions after his arrest.
He could be replaced as Renault CEO after Renault board meetings set for the next few days.
French officials - among them Renault board member Martin Vial - arrived in Tokyo to discuss the future of Renault's partnership with Nissan, in which it is the largest investor after bailing out the Japanese company in the early 2000s.
Murguet also said Renault had no plans to stockpile vehicles in preparation for Britain's exit from the European Union in March, in case London and Brussels fail to reach an exit deal.
The French government, which owns 15 percent of Renault's shares and 22 percent of voting rights, has called for a board meeting "in the coming days".