Fugitive former Nissan Chairman Carlos Ghosn carried a French passport with him after his release from a Tokyo jail, a source familiar with the matter said Thursday, as prosecutors searched a residence of the fallen auto titan in Tokyo to determine how he fled to Lebanon to escape what he claimed is a “rigged” justice system.

Ghosn holds Brazilian, Lebanese and French passports, the last of which he has two, for reasons that are unclear. Although Ghosn's lawyers in Tokyo initially possessed all of his four passports, Ghosn was under an obligation to carry a passport after his release in accordance with the law and allowed to carry one of the French passports with him, though it was held inside a locked case. The lawyers retained the three other passports as well as the key to the case, according to the source.

Lebanese officials have said there would be no need to take legal measures against Ghosn because he entered the country legally on a French passport.