Japanese Woman Cleared Again in High-Profile Marriage Death Case
A 30-year-old woman in Japan has been acquitted for the second time over the death of her much older husband, in a case that has drawn widespread attention due to its unusual circumstances and financial backdrop. Sudo Saki was found not guilty after the Osaka High Court upheld an earlier ruling, dismissing an appeal by prosecutors.
The decision reinforces a prior judgment delivered in 2024, where a lower court concluded that there was insufficient evidence to convict her of murder. The case has continued to spark debate in Japan over circumstantial evidence and the burden of proof in criminal trials.
Marriage, Wealth and Suspicion
The case centres on the death of Nozaki Kosuke, a 77-year-old man who died in May 2018, just three months after marrying Sudo. Prosecutors alleged that she had deliberately caused his death by administering a stimulant substance, leading to acute poisoning.
At the time of his death, Nozaki was reportedly a wealthy individual with assets estimated at around 1.3 billion yen, equivalent to more than S$10 million. The significant financial gap between the couple, along with the short duration of their marriage, quickly raised suspicions and intensified public scrutiny.
During earlier proceedings, Sudo acknowledged that she had entered the marriage for financial reasons but consistently denied any involvement in her husband’s death.
Evidence and Legal Challenges
Court proceedings revealed that Sudo had allegedly purchased a substance believed to be methamphetamine and had conducted internet searches related to overdoses and so-called “perfect crimes”. These details formed a key part of the prosecution’s argument.
However, judges determined that such evidence alone was not sufficient to establish guilt beyond a reasonable doubt. The courts noted that it could not be conclusively ruled out that Nozaki may have ingested the substance himself, whether intentionally or accidentally.
This uncertainty proved critical, as Japanese criminal law requires a high standard of proof before a conviction can be secured. As a result, both the district court and the high court found that the prosecution’s case did not meet this threshold.
Appeal Rejected, Acquittal Stands
Following the initial acquittal, prosecutors had sought a life sentence and proceeded with an appeal, arguing that the earlier judgment failed to properly weigh the circumstantial evidence. Despite these efforts, the high court ultimately sided with the defence.
Sudo’s legal team maintained throughout the proceedings that she was innocent and that the original ruling was fair and legally sound. With the appeal now dismissed, the acquittal stands, bringing a close to a case that has spanned several years and multiple court hearings.
The outcome underscores the challenges prosecutors face in cases that rely heavily on indirect evidence, particularly when alternative explanations cannot be definitively excluded.