US Green Beret veteran Michael Taylor and his son Peter have arrived in Japan after being extradited, Nippon TV reported on Tuesday, with the US Department of State confirming the extradition later in the day.
According to Kyodo News, they will be taken to a Tokyo detention centre after clearing immigration.
The men are accused of plotting Carlos Ghosn's escape from his Tokyo house arrest in late 2019, as the ex-head of the Renault-Nissan-Mitsubishi multinational corporation was charged with money laundering and tax evasion by Japan.
Previously, Michael Taylor claimed that if he and his son were extradited, Japanese authorities "are clearly going to torture us".
According to the prosecution, the Americans received $1.3 million for helping Ghosn to jump bail by packing him into an audio-equipment case and then smuggling him out of Japan onto a private jet in 2019. Pilots Noyan Pasin and Bahri Kutlu Somek, also convicted in connection with the case, maintained that they were unaware Ghosn was on board the flight.
The former Nissan chief, who escaped to his home country of Lebanon, is accused of financial fraud, allegedly conducted during his time at the company, with the firm seeking millions of dollars in damages from him. Ghosn has denied any wrongdoing, claiming that the accusations were a "plot and treason" by Nissan executives.