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The news came from Japan’s former air force chief, Toshio Tamogami, who said he was informed of the development by Israel’s foreign ministry director-general earlier this month. The director-general, Nissim Ben Shitrit, formerly served as Israel’s ambassador to Japan.

The Japanese government has not confirmed this information, and Tamogami himself said he knows nothing beyond the number of alleged Japanese defectors. The meeting between Tamogami and Shitrit reportedly took place on Sept. 12.