Authorities in Beirut have yet to begin their investigation into the escape from Japan of former Nissan Motor Co. boss Carlos Ghosn, who jumped bail and fled to Lebanon late last year, the top prosecutor has said.

Prosecutor General Ghassan Oweidat told Kyodo News in an exclusive interview Wednesday that Lebanese authorities have not received any formal documents from Japan concerning Ghosn's extradition, maintaining that he has "yet to be charged with a crime that is punishable by law in Lebanon" as he entered the Middle Eastern nation legally.

Ghosn, who headed Nissan for nearly two decades, faced trial in Japan over allegations that he misused company funds and understated his remuneration by billions of yen for multiple years.