RATCHABURI — 2023 · Serial Murder

The Thai Cyanide Murders

Under InvestigationSources: ALast updated: 14 October 2026

In April 2023 the sudden death of a woman attending a Buddhist ritual on the banks of the Mae Klong river in Ratchaburi, and the discovery of cyanide in her body, triggered one of Thailand's largest poisoning investigations. Police linked a total of 15 poisonings in several provinces between 2015 and 2023, one of them non-fatal, to a woman accused of borrowing money from victims and taking their belongings; prosecutors said gambling debts lay behind the crimes. The defendant was arrested in late April 2023. In November 2024 the Bangkok Criminal Court sentenced her to death over the Ratchaburi death; separate trials over the other cases and appeals are ongoing.

Date
2023
Place
Ratchaburi, Thailand, Ratchaburi, TH
Category
Serial Murder
Case Status
Under Investigation
Coordinates
13.5400, 99.8150 ↗

Timeline of Events

  1. 2015The first suspicious death covered by the investigation occurred.
  2. April 2023A woman died during a ritual in Ratchaburi.
  3. Late April 2023The female defendant was arrested.
  1. 20 November 2024The criminal court imposed a death sentence in the first trial.
  2. 2026Trials over the other deaths continue.

Sources

Source grade A: several independent sources, at least one an official record or reference work. If you spot a mistake or something missing, report it with "Suggest a correction" in the app.

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🕯️ This record was prepared with respect, in memory of those who lost their lives.