Hong Kong (CNN Business) Former Nissan chief Carlos Ghosn is set for an even longer stay in a Tokyo jail cell.

The Tokyo District Court said Monday that Ghosn, who has been detained for the past six weeks, can be held for a further 10 days without bail. That means the auto industry legend will likely remain in prison until at least January 11.

Prosecutors have alleged that Ghosn temporarily shifted 1.85 billion yen ($16.6 million) of losses from his private investments onto a Nissan subsidiary as the global financial crisis erupted in October 2008.

Ghosn's arrest has strained the alliance he built between Nissan, Renault and Mitsubishi Motors.

Since his initial arrest on November 19, Ghosn has been re-arrested twice as prosecutors continue to build a case against him. The auto executive was indicted on December 10 on separate allegations he under-reported his income by tens of millions of dollars between 2010 and 2015 in Nissan disclosures. That charge carries a maximum prison sentence of 10 years.

Prosecutors have accused Ghosn of continuing the practice into the 2017 financial year but haven't indicted him on that allegation yet.

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