Former Nissan boss Carlos Ghosn has faced French investigative judges in Beirut who questioned him for several hours over suspicions of financial misconduct.

His defence lawyers called it “a very important day” for the car magnate-turned-fugitive.

The meeting marked the first opportunity for Ghosn to defend himself against the French allegations — including spending on lavish parties and private planes — since his 2018 arrest in Japan and escape to Lebanon a year later.

“It is an occasion that Mr Ghosn has waited for a long time to show that the accusations brought against him are baseless,” Jean Yves Le Borgne, a member of Ghosn’s defence team, told reporters in Beirut. He said the questioning is expected to last several days.

The questioning at the Palace of Justice in Beirut lasted about six hours, including a lunch break. Ghosn did not make any comments to reporters and Lebanese security forces kept journalists away from the gate where he entered and exited the courthouse.

Ghosn faces multiple legal challenges in France after Japanese accusations triggered scrutiny of his activities there.

In a wide-ranging interview with the Associated Press last week, he said he hoped the visit by French investigators to Lebanon would be his first real opportunity to defend himself. He also said he had much more confidence in the French legal system than the Japanese system he fled.

Ghosn has not been charged with anything in France but could be, given preliminary accusations of fraud, corruption, money laundering, misuse of company assets, or aggravated breach of trust.

French investigators are looking into the financing of lavish parties Ghosn threw at the Versailles Palace — complete with period costumes and copious Champagne — as the head of the Renault-Nissan car alliance.

They are also examining 11 million euros (£9.5 million) in spending on private planes and events arranged by a Dutch holding company, and subsidies to a car dealership in Oman.

Ghosn told the AP he has done nothing wrong and hopes the investigations are eventually dropped.

He was arrested in Japan in November 2018 on accusations of financial misconduct and was kept in solitary confinement for months without being allowed to speak with his wife. He fled to Lebanon a year later in a Hollywood-style escape that stunned the world.

Meanwhile, several associates are in jail or on trial in Japan and Turkey, in cases related to his financial activities or escape.

Jean Tamalet, one of two French lawyers representing Ghosn along with one Lebanese attorney, said Monday’s meeting was “the very first time of justice” for Ghosn since being arrested in Japan, adding it was “the first time he could explain himself in front of judges with his lawyers seated near him and after preparing his defence”.

“So it was a very important day for him today and he was very happy to give all the answers to all the questions asked by the French judges,” he said.

In a statement earlier, Ghosn’s lawyers said their client will be questioned by “French investigating judges, in the context of legal proceedings organised by the Lebanese judicial authorities”. The statement added that the “hearing is a voluntary step taken” by Ghosn.

Ghosn’s defence team said they have “already identified serious procedural irregularities in the French dossiers”.

The defence team said “abnormalities, which undermine the judicial process, are the result of the peculiar methods of the Japanese investigation” that was the primary source for building the French cases.

It is an unusual move for French magistrates to question a suspect abroad. Ghosn, who was given sanctuary by Lebanese authorities, grew up in Lebanon and has Lebanese citizenship. Lebanon will not extradite him.

Monday’s interrogation comes days after Ghosn was questioned by French investigators as a witness in a different case — a probe into Renault’s pollutant emissions, according to two Lebanese officials.

Renault, along with other car makers, is facing an investigation that dates back to 2017 over cheating on emission tests, a charge the company denies. It follows earlier investigations by French anti-fraud authorities who found abnormally high emissions from some of Renault’s diesel cars.

Ghosn had been with Renault since 1996, until its alliance with Nissan in 1999.