DSI Refers Tangmo Case Files to NACC, Alleging Investigation Tampering

On August 24, 2026, sources from Thailand’s Department of Special Investigation (DSI) confirmed the submission of a comprehensive case file to the National Anti-Corruption Commission (NACC). The investigation, spanning 45 files and over 13,000 pages, involves approximately 40 individuals, including state officials and private citizens, suspected of tampering with the judicial process in the death of actress Nida 'Tangmo' Patcharaveerapong.

According to Khaosod Online, investigators allege that evidence—including forensic data, boat photographs, and GPS records—was manipulated to assist certain individuals in avoiding or reducing legal penalties. This development follows the Nonthaburi Provincial Court’s previous acquittal of four defendants—Idsarin Juthasuksawat, Wisapat Manomairat, Nitas Kiratisuthi-sathorn, and Peem Thamthirasri—who had been charged with negligence leading to death.

For residents and travelers, this case highlights ongoing scrutiny into the integrity of Thailand’s judicial and investigative procedures. While the DSI has concluded its evidence gathering, the matter is now under the purview of the NACC. It remains to be confirmed how the NACC will proceed with these allegations and whether any formal charges will be brought against the 40 individuals named in the DSI report. The public is advised to monitor official announcements for updates on this legal process.