NAKHON PATHOM, THAILAND – A Thai court has sentenced serial killer Sararat ‘Am Cyanide’ Rangsriwuthaporn to death for the third time.
Deadly Poison Among Close Friends
On April 30, the Criminal Court found Sararat guilty of the premeditated murder of Police Captain Kanda Torai. The judges ruled that Sararat meticulously planned the crime and deliberately administered the poison.
The victim, aged 36, had a close personal relationship with the perpetrator. Both women were involved in informal lending, which investigators said provided the motive.
Unexplained Death Leads to Truth
The murder occurred on August 10, 2022, in Nakhon Pathom province. Initially, authorities did not suspect foul play because the policewoman died of circulatory and respiratory failure.
Only later irregularities led to a reopening of the case and the discovery of cyanide in the victim’s body. This led investigators to uncover a much larger and alarming pattern.
Long List of Horrific Crimes
This verdict is the third death sentence for Sararat within a few years. In November 2024, she was convicted of murdering Siriporn Khanwong, and in February 2026, she was sentenced for the murder of Inspector Pu.
However, in all three cases, the court commuted the death penalty to life imprisonment. The judges cited the partially useful statements made by the defendant during the trials.
Investigation into a Serial Killer
Thai authorities believe Sararat killed a total of 14 people between 2015 and 2023. Another victim survived the poison attack with severe injuries, leading to dozens of additional charges.
The pattern of the crimes was almost always identical, targeting acquaintances from her financial circle. Witnesses said Sararat was often the last person seen with the victims before they suddenly collapsed.
Justice for the Bereaved
This case is considered one of the most extensive serial murder investigations in Thai history and shocked the entire country. Many families only learned the true cause of death years after losing their loved ones.
Although the death sentences have been commuted to life, Sararat still faces further legal proceedings. Under Thai law, these verdicts can be revised by higher courts or through a royal pardon.