A Tokyo court approved on Friday a request by prosecutors to detain Carlos Ghosn for 10 days for further questioning. The ousted Nissan boss will be held until April 14. The decision was widely expected after prosecutors arrested Ghosn for the fourth time at his Tokyo apartment on Thursday. Ghosn’s lawyer, Junichiro Hironaka, told reporters the defense team would file an appeal on Friday against the detention. Authorities are looking into new allegations that Ghosn transferred some $15 million in Nissan funds between late 2015 and mid-2018 to a dealership in Oman. They suspect around $5 million of these funds were siphoned off for Ghosns use, including for the purchase of a luxury yacht and financing personal investments. Prosecutors say Ghosn "betrayed" his duty not to cause losses to Nissan "in order to benefit himself." In a statement released on Thursday, Ghosn said he was innocent of the “groundless charges and accusations” against him. The once-feted executive, who has said he is the victim of a boardroom coup, also called the latest arrest an attempt to silence him. Stephen Givens, an American attorney practicing law in Japan since 1987, told AFP the latest allegations were the most serious yet. "If the facts are true... that is stealing from the company, that is embezzlement, that is terrible," said Givens, who is not connected with the Ghosn case. The Ghosn scandal has rocked the global auto industry and strained ties between Nissan and its global alliance partner Renault. It has also shone a harsh light on Japan’s judicial system. Thursday’s arrest came some 30 days after Ghosn had been released on $9 million bail from a Tokyo detention center. Legal experts have characterized the move as rare for someone already released on bail. Under Japanese law, prosecutors can seek an extension of another 10 days of detention before they must either bring formal charges against the suspect or let him go. Justice Minister Takashi Yamashita, a former Tokyo prosecutor himself, hit back at growing criticism of the justice system, sometimes described as "hostage justice" due to long detention periods for suspects aimed at forcing a confession. "I understand that it is being handled appropriately in accordance with the stipulation of the code of criminal procedure. So the criticism is not warranted," Yamashita told journalists. Ghosn launched a counter-attack in an interview with French channel TF1, recorded just before his dawn arrest on Wednesday. Describing himself as "a combative man and an innocent man", he vowed to "defend myself to the bitter end". And he voiced concern that he would not be given a fair trial, with around 99 percent of trials in Japan resulting in a conviction. "I have doubts over the way the judgment will take place. If there is a fair ruling, I am very confident but if it is not fair, I am worried about what will happen," said Ghosn. He lashed out at the conditions in the detention center, saying he was deprived of his watch, forced to sleep with the light on and forbidden from contact with his loved ones. "I wouldnt wish what I have suffered on my worst enemy," he said. Ghosn spent 108 days in the detention center in northern Tokyo before being dramatically released on bail. He had since lived in a court-appointed apartment in Tokyo without commenting on his situation despite huge international and Japanese media interest in his case that has shocked and surprised from the beginning. However, just as reports began to surface that he could be re-arrested, Ghosn emerged on Twitter to announce plans to hold a news conference on April 11. With this now impossible, his lawyer Hironaka said Ghosn had pre-recorded a video but refused to give details of the contents or when it would be released.