DSI investigation into Tangmo case files

MGR Online•Society•15d ago

Reader Briefing

The Department of Special Investigation (DSI) has submitted its investigation file regarding the death of Pattarathida Patcharaveerapong to the National Anti-Corruption Commission (NACC).

•DSI investigated whether individuals colluded to distort the criminal justice process in the case of Pattarathida Patcharaveerapong.
•The investigation focused on eight key files, including forensic evidence, GPS data, and boat simulations.
•The case was initiated in March 2022 by then-DSI Director-General Traiyarit Temhiwong.
•The NACC is now the body considering the investigation file 20/2025.

Overview

•Traiyarit Temhiwong ordered the DSI to begin investigating the facts and evidence in March 2022.
•DSI established a fact-finding investigation committee in 2025 following complaints from Panida Siriyutthayothin and Atchariya Ruengrattanapong.
•DSI analyzed forensic evidence including wounds, GPS data, time of death, hair, and soil/sand samples.
•DSI conducted boat simulations in 2025 using volunteers to test doubts regarding how a human body could fall from the boat.
•DSI examined whether the wounds on the legs of Pattarathida Patcharaveerapong were caused by boat propellers or other sharp objects.
•DSI used a cross-examination method, comparing court judgments, defendant testimonies, witness testimonies, and GPS data.
•DSI has completed the investigation file 20/2025 and transferred it to the National Anti-Corruption Commission.
•DSI investigated whether state officials or other individuals colluded to distort the justice process to help others avoid or reduce punishment.

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Key Quotes

Traiyarit Temhiwong

"There are doubts raised by the public regarding the cause of death and the justice process, which DSI sees as an important matter; the state has a duty to make the truth appear."

มีข้อสงสัยที่สาธารณชนตั้งขึ้นเกี่ยวกับสาเหตุการเสียชีวิตและกระบวนการยุติธรรม ซึ่งดีเอสไอเห็นว่าเป็นเรื่องสำคัญ รัฐมีหน้าที่ต้องทำความจริงให้ปรากฏ

Key Entities

Organization

Department of Special Investigation(กรมสอบสวนคดีพิเศษ)ℹ️

The agency that conducted the investigation into the death of Pattarathida Patcharaveerapong and potential justice system distortion.

National Anti-Corruption Commission(สำนักงานคณะกรรมการป้องกันและปราบปรามการทุจริตแห่งชาติ)

The body currently considering the investigation file 20/2025 submitted by the Department of Special Investigation.

Crime Victim Assistance Club(ชมรมช่วยเหลือเหยื่ออาชญากรรม)

The organization chaired by Atchariya Ruengrattanapong.

Central Institute of Forensic Science(สถาบันนิติวิทยาศาสตร์)

The institute whose autopsy results were compared with police data regarding the wounds of Pattarathida Patcharaveerapong.

Person

Pattarathida Patcharaveerapong(ภัทรธิดา พัชรวีระพงษ์)

The deceased individual, also known as Tangmo, whose death was the subject of the DSI investigation.

Traiyarit Temhiwong(ไตรยฤทธิ์ เตมหิวงศ์)

The Director-General of the Department of Special Investigation at the time the investigation was ordered in March 2022.

Panida Siriyutthayothin(พนิดา ศิริยุทธโยธิน)

The mother of Pattarathida Patcharaveerapong who filed a complaint leading to the 2025 investigation committee.

Atchariya Ruengrattanapong(อัจฉริยะ เรืองรัตนพงศ์)

The Chairman of the Crime Victim Assistance Club who filed a complaint leading to the 2025 investigation committee.