>> The chairman of Renault-Nissan, Carlos Ghosn, has been arrested. Japanese media say he's being questioned over under-reporting his salary. The auto giant's already moving to terminate his contract and that of another senior manager. It says it's discovered misconduct, including using company money for personal purposes.>>
> The state, as a shareholder, will be extremely vigilant regarding the stability of the alliance and of the Renault group.
And we're also told by experts that this misconduct is serious enough to dismiss them.>> Renault's shares tumbled as much as 13% on the news. Ghosn is a legend in the industry. He's one of very few foreign top executives in Japan, and is widely revered there for rescuing Nissan from near bankruptcy.
His departure would raise questions about the future of its alliance with Renault. Reuter's Breakingviews columnist Liam Proud is following the story.>> Now, there are a lot of people on the board of all these companies that know how to run a car company. But the problem is, his job was to knit together all these different interests, and try and forge ahead with this kind of integrated global car maker.
And without him there, it's harder to see that happening.>> Those worries are making waves in France, because the French state owns a big stake in Renault. President Emmanuel Macron felt the need to step in.>>
Ghosn became chief executive of Nissan in 2001, when Renault bought a controlling stake. He held the post until last year, when he became chairman. Records show he received over $10 million for his final year as boss of the Japanese firm.