TOKYO (AP) — Japan's Supreme Court has turned down an appeal by the lawyers for former Nissan Chairman Carlos Ghosn to end his detention following his arrest for the fourth time on financial misconduct allegations.

The court decision came Friday, and was relayed to foreign media on Monday. Separately on Monday, Ghosn's lawyers filed an appeal of that decision, which rejected their earlier appeal against the extension of his detention through April 22.

Ghosn was arrested in November and released on bail last month, but was arrested again on April 4.

He has been charged with falsifying financial documents in under-reporting his retirement compensation and with breach of trust in dubious payments.

He says he's innocent, noting that the compensation was never decided and claiming the payments were legitimate.

It's unclear when the detention may end or his trial will start.

Long detentions and multiple arrests are routine in Japan, but re-arresting a person who cleared bail, as Ghosn did, is unusual.

Ghosn led Nissan for two decades, rescuing it from the brink of bankruptcy. Shareholders voted him off the company's board last week.

In a video released by his lawyers before his latest arrest, Ghosn said some executives plotted against him in what he called a "conspiracy" over unfounded fears about losing Nissan's autonomy to alliance partner Renault SA of France.

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