The Admissibility of Forensic Evidence in Drug Conspiracy Cases in Nakhon Phanom Provincial Court

Main Article Content

Narayut Traiyasut
Patchara Sinloyma
Sahaphat Homjan
Sarit Suebpongsiri


This research was a qualitative study with the objective of studying the admissibility of forensic evidence in drug conspiracy cases in Nakhon Phanom Provincial Court. This research was done through the use of in-depth interviews with five judges at the Nakhon Phanom Provincial Court with experience in judicial proceedings. This research was conducted through both studying drug conspiracy cases from the Nakhon Phanom Provincial Court and learning lessons from the verdicts. After the data from 15 drug conspiracy cases were brought together, the study found that: 1) The Nakhon Phanom Provincial Court has the same forensic evidence in cases of conspiracy to commit drug offenses as other criminal cases, and it is in line with the judgment of the Supreme Court, that is to say that the court listens to forensic evidence as supporting witnesses. The court listens to all evidence provided with the accompanying rhetoric to weigh the case. 2) It is necessary for forensic evidence obtained from investigative officers to appear in the case statement because it is information that indicates the events of the offense. In addition, the weight of evidence is increased when forensic evidence obtained from the Probation Office supports the evidence obtained from the Investigative Department. 3) Government officials lack knowledge related to evidence collection. Therefore, training should be organized and knowledge should be disseminated to officers.


Download data is not yet available.

Article Details

How to Cite
Traiyasut, N., Sinloyma, P., Homjan, S., & Suebpongsiri, S. (2021). The Admissibility of Forensic Evidence in Drug Conspiracy Cases in Nakhon Phanom Provincial Court. Journal of Criminology and Forensic Science, 7(1), 106-121. Retrieved from
Research Articles


Chaiakrawat, T. (2019). Investigating Hidden Information on Mobile Phones and Computers. Retrieved December 12 ,2020., from
Diokno, M. I. S. (2016). Forensic Science in the Prosecution of Illegal Drugs Cases. Philippine Journal of Science, 147(1), 1-8.
Kitbon, A. (2015). Forensic Evidence and Social Justice Administration. Bangkok: Forensic Science Institute, Ministry of Justice. (In Thai).
Office of the Narcotics Control Board. (2019). Conspiracy Prosecution Guide and Support or Assistance. Bangkok, Thailand: Office of the Narcotics Control Board. (In Thai).
Pongpermsup, K. (2011). The Role of Police Investigator in Forensic Science Application in Methamphetamine Investigation. Master of Science Thesis, Silpakorn University, Nakhon Pathom. (In Thai).
Ruiu, M. and Daricuic, C. (2016). Special Investigative Methods and Techniques of Drug Trafficking Offenses. Forensic Science Forum, 9(1), 27-33.
Vimollohakarn, M. (2010). Seeking Evidence in Drug Cases by Using Special Investigation Methods. Master of Law Thesis, Thammasat University, Bangkok. (In Thai).
Wapansu, C. (2014). Problems of Evidence Hearing in Drug Conspiracy Offenses Under the Act on Measures for the Suppression of Offenders in an Offence Relating to Narcotics, B.E. 2534. Bangkok: Judicial Service Training Institute, Court of Justice. (In Thai).
Suebpongsiri S. (2008). Forensic Evidence. Nakhon Pathom: Principles of Forensic Science, Faculty of Forensic Science, Police Cadet Academy. (In Thai).