Cullen, Thomas. «Iran's Cold Cases Are Coming Back to Haunt Us» (en anglès). TheDailyBeast.com, 22-02-2015. [Consulta: 13 juliol 2022]. «In 2006 the 15-year statute of limitations on his murder expired. Hitoshi’s wife, Masako, was still crying out for justice, pressing the Japanese police not to give up on her husband’s case.»