Tokyo prosecutors have won permission from a district court to extend the detention of Nissan Chairman Carlos Ghosn for a further 10 days, several media reported on Wednesday.
Prosecutors had 48 hours after his arrest to either press formal charges, release him or request this 10-day custody extension to continue questioning.
Contacted by AFP, both the court and the prosecutor declined to confirm the reports.
In a stunning fall from grace for the once-loved tycoon, Ghosn was arrested after arriving in Tokyo on his private jet on Monday.
His firm Nissan accused him of under-reporting his salary over a period of several years and "numerous significant acts of misconduct."
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