Tokyo High Court
Miura was convicted of the murder and was sentenced to life imprisonment in Japan in 1994, upon which he promptly appealed to Tokyo High Court. After four years of deliberation, Tokyo High Court overturned the conviction and the resulting sentence, because they were not able to identify the assailant and thus could not prove conspiracy. In 2003, the Supreme Court also acquitted him of the charge, saying "high court's judgment that there is reasonable doubt that he conspired with an unidentified person to kill his late wife is reasonable."