Section 147: Bar on re-investigation
Statutory text (Thai original)
เมื่อมีคำสั่งเด็ดขาดไม่ฟ้องคดีแล้ว ห้ามมิให้มีการสอบสวนเกี่ยวกับบุคคลนั้นในเรื่องเดียวกันนั้นอีก
เว้นแต่จะได้พยานหลักฐานใหม่อันสำคัญแก่คดี
ซึ่งน่าจะทำให้ศาลลงโทษผู้ต้องหานั้นได้วรรคสอง (สภาไม่อนุมัติ)
English translation
When a final non-prosecution order has been issued, no further investigation concerning that person in the same matter shall be conducted, except where new and material evidence bearing on the case is obtained which would likely enable the court to convict that accused. (Second paragraph: not approved by the Assembly.)
This English translation is provided for reference only and has not yet been firm-verified. Always rely on the Thai original.
Firm annotation
This section gives finality to a non-prosecution decision by barring re-investigation of the same person on the same matter, a protection akin to preventing repeated prosecutorial attempts. The bar is triggered only by a genuinely final order under sections 145 and 146, not by a preliminary investigator's opinion. Its sole exception, new and material evidence likely to secure a conviction, is narrow. Where the bar applies but investigation proceeds anyway, that investigation is unlawful and the prosecutor gains no power to prosecute the same offence.
Why this matters in practice
For an accused, this is one of the strongest protections in the pre-trial process: a final non-prosecution order generally closes the same matter for good. If police or prosecutors try to reopen it, the burden is on them to show genuinely new and material evidence, and an investigation that ignores this bar can void any later prosecution. If you face a reopened matter, a licensed Thai lawyer can test whether the section 147 bar defeats the case before you go to court in Thailand.
Supreme Court decisions interpreting this section
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Supreme Court Judgment No. 3095/2562 (2019)
A final non-prosecution order releases the suspect from being a suspect on that charge. Where the order covered the charge of driving while using a category 1 narcotic and the remaining charge was using that narcotic, the suspect was not accused of, or being prosecuted for, another offence punishable by imprisonment, so the condition in section 19 paragraph one of the Drug Addict Rehabilitation Act B.E. 2545 was met and the prosecution had first to have him examined for use of or addiction to narcotics.
At the investigation stage the defendant was charged with two offences: using a category 1 narcotic (methamphetamine) and driving while using it. The prosecutor for Suphan Buri issued a final non-prosecution order on the driving charge only, so the defendant was released from being a suspect on that charge. The remaining charge of using the narcotic was then prosecuted in this case. Because the condition in section 19 paragraph one of the Drug Addict Rehabilitation Act B.E. 2545 was satisfied, the prosecution should first have had the defendant examined for use of or addiction to narcotics. It did not, so the defendant lost the right to rehabilitation and the prosecution had no power to bring the case.
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Supreme Court Judgment No. 4802/2559 (2016)
Where no new and material evidence appears after a final non-prosecution order, re-investigating the same matter is barred under section 147 and the resulting prosecution is void for want of power.
Because no new and material evidence likely to lead to conviction appeared, re-investigating the defendants for jointly selling counterfeit fertilizer, the same matter, was barred under section 147; that investigation was not lawful, so the prosecution had no power to prosecute that charge and the defendants' appeal succeeded on that point.
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Supreme Court Judgment No. 1821/2557 (2014)
Section 147 concerns the effect of a final non-prosecution order, which bars any further investigation of that person in the same matter, and belongs to the investigation stage. It cannot be applied by analogy, as the nearest applicable law under Civil and Commercial Code section 4 paragraph two, to a public prosecutor's power under section 11 (7) of the Public Prosecutor Act B.E. 2498 to decide whether to appeal further; nothing in the procedural law prevents the prosecutor from changing a decision not to appeal.
In a contempt case, where the court of first instance had punished the person of its own motion and the Court of Appeal had discharged him, the public prosecutor first ordered that there be no further appeal and then reversed that order. The person concerned argued the reversal required new evidence, by analogy with Section 147. The Supreme Court rejected the analogy: Section 147 belongs to the investigation stage and is a different matter from the prosecutor's power under section 11 (7) of the Public Prosecutor Act B.E. 2498, and no provision of procedural law prevents such a change of decision.
Curated decisions with case numbers verified against the Supreme Court database. English renderings are the firm's editorial translation for study.
Cited in 6 Supreme Court decisions (2001 to 2019)
Selected citing decisions
- Decision 4802/2559 (2016)
- Decision 1821/2557 (2014)
- Decision 4243/2550 (2007)
- Decision 8481/2544 (2001)
- Decision 6035-6038/2561 (2018)
- Decision 3095/2562 (2019)
This list is selected automatically, weighted towards judgments that turn on this section rather than ones that merely recite it when passing sentence. It has not yet been reviewed by the firm.
Counted across the firm's corpus of 83,652 Supreme Court decisions, 1921 to 2026. The count is complete; the stated year range trims rare outliers so it describes where the citations actually sit. These figures are computed by us and are not official court statistics. How we count these, and what we measured
Frequently asked questions
Can a case be reopened after a final non-prosecution order?
Generally no. Section 147 bars re-investigating the same person on the same matter, except where new and material evidence appears that would likely lead the court to convict.
What if police investigate anyway despite the bar?
If the section 147 bar applies but an investigation proceeds without new material evidence, that investigation is unlawful and the prosecutor has no power to prosecute the same offence.
Related guides on ThaiLawOnline
Cite this section
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Plain citation
Criminal Procedure Code, s. 147 (Thailand) -
Academic citation
Criminal Procedure Code (Thailand), s. 147. ThaiLawOnline, https://www.thailawonline.com/thai-criminal-procedure-code/section-147/ (accessed 1 September 2026). -
Thai citation
ป.วิ.อ. มาตรา 147 -
Permalink
https://www.thailawonline.com/thai-criminal-procedure-code/section-147/ -
Embed on your site
<blockquote cite="https://www.thailawonline.com/thai-criminal-procedure-code/section-147/"><p>When a final non-prosecution order has been issued, no further investigation concerning that person in the same matter shall be conducted, except where new and material evidence bearing on the case is obtained which would likely enable the court to convict that accused. (Second paragraph:…</p><footer>Criminal Procedure Code, s. 147 (Thailand): <a href="https://www.thailawonline.com/thai-criminal-procedure-code/section-147/">ThaiLawOnline</a></footer></blockquote>
The Thai text is authoritative. The English is an unofficial translation by ThaiLawOnline, free to reuse with attribution.