The wife of former Nissan Motor Co. Chairman Carlos Ghosn on Thursday criticized his treatment and inaccessibility in Tokyo, saying the Japanese judicial system "does not align with the standard of the other G-7 nations."

In a statement released ahead of the Group of Seven summit in France from Saturday, Carole Ghosn was quoted as saying it "should appall the French government" that 276 days after arresting her husband, a French citizen, Japanese authorities have yet to issue a trial date.

(Carlos Ghosn and wife Carole)

She urged French President Emmanuel Macron to take up the issue in a meeting with Japanese Prime Minister Shinzo Abe when the two leaders attend the G-7 summit.

"I am calling on President Macron to intercede on my husband's behalf with Prime Minister Abe and implore him to do the right thing," she said.

The former auto tycoon faces charges of financial misconduct in Japan. He has denied all allegations since his initial arrest in November last year.

The statement asserted that even after Ghosn was released on bail on April 25, the conditions are "inhumane," with "the close monitoring of his movements and communications."

"Two weeks ago, the judge for the case denied the family's fifth appeal for Carole Ghosn's visitation or communication rights, without providing any explanation," it said.

Carole Ghosn criticized the Japanese system for practicing "hostage justice," and added, "To say that my husband's bail conditions are 'cruel and unusual' would be an understatement."

The G-7 groups Britain, Canada, France, Germany, Italy, Japan and the United States plus the European Union.