Thai cyanide serial killer claims 15th victim, confirms RTP deputy commissioner

Photo via Nation

The Deputy Commissioner of the Royal Thai Police (RTP), Surachate “Big Joke” Hakparn, today confirmed that the number of victims of the Thai cyanide serial killer increased from 14 to 15. Big Joke added that officers are now investigating 78 million baht found in the bank accounts of the cyanide serial killer, Sararat “Am” Rangsiwuthaporn, and 12 other people.

The police have pressed charges against Sararat for 14 cases, but there is still an ongoing investigation into the death of a possible 15th victim, a 37 year old woman named Monthathip “Sai” Khao-in.

According to the initial report, Sai passed away after arriving in Bangkok from abroad. Sararat picked her up from the airport, and Sai died shortly after their meeting. Additionally, Sai’s mother reported that Sararat had assigned herself as the executor to manage Sai’s assets.

According to the report on MGR Online, Sai was considered the Thai cyanide serial killer’s first victim in 2015. Two victims were murdered in 2020, 11 victims were killed in 2022, and three victims were killed this year before Sararat was arrested.

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Yesterday, Big Joke confirmed that the court has approved the charge against Sararat for Sai’s murder. He also revealed that the case was 80% complete and would be closed on Friday, May 12. Big Joke further disclosed details about the investigation on Am’s assets, saying that officers discovered approximately 78 million baht in Sararat’s bank account. However, the entire amount of money was transferred to 12 other people between 2020 and 2023.

According to Big Joke, Sararat’s ex-husband, Police Lieutenant Colonel Withun “Off” Rangsiwuthaporn, who was released on bail for 100,000 baht, admitted that he knew Sararat had a lot of money but did not know where it came from. Sararat also gave him 4 million baht to pay off his debt. He is currently being questioned regarding his potential involvement in each murder.

The investigation was conducted at 54 factories in Bangkok, Kanchanaburi, and Nakhon Pathom to search for the origin of the cyanide substance.

Big Joke told the media…

“Right now, we are investigating to the other relevant suspects in the case. I am unable to release the details of the investigation right now. If there are any more arrest warrants launched, I will immediately update the public. We need more time for the investigation. I assure you that everything will be taken into account.”

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Petch Petpailin

Petpailin, or Petch, is a Thai translator and writer for The Thaiger who focuses on translating breakingThai news stories into English. With a background in field journalism, Petch brings several years of experience to the English News desk at The Thaiger. Before joining The Thaiger, Petch worked as a content writer for several known blogging sites in Bangkok, including Happio and The Smart Local. Her articles have been syndicated by many big publishers in Thailand and internationally, including the Daily Mail, The Sun and the Bangkok Post. She is a news writer who stops reading news on the weekends to spend more time cafe hopping and petting dwarf shrimp! But during office hours, you can find Petch on LinkedIn and you can reach her by email at petch@thethaiger.com.

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