Open Decision Ledger · Criminal & investigative procedure
Legality of Opening, Sampling, and Component Analysis Conducted Without a Warrant in the Customs Inspection of International Mail
Translated from the Korean original. Read the Korean
Supreme Court, Sept. 26, 2013, 2013Do7718 (judgment)
Case name: 마약류관리에 관한 법률 위반(향정)
Official text on the National Law Information Center
Question
If customs, in the course of the customs inspection procedure for international mail, opens the mail and takes samples and conducts component analysis without a search and seizure warrant, is that inspection unlawful?
Holding
Unless there are special circumstances, it is not unlawful. The opening, sampling, and component analysis in the customs inspection procedure for international mail have the character of an administrative investigation aimed at the proper clearance of export and import goods and the like, and are not compulsory measures by an investigative agency; accordingly, they were held to be lawful even though carried out without a warrant.
Summary of the holding, verbatim
우편물 통관검사절차에서 이루어지는 우편물의 개봉, 시료채취, 성분분석 등의 검사는 수출입물품에 대한 적정한 통관 등을 목적으로 한 행정조사의 성격을 가지는 것으로서 수사기관의 강제처분이라고 할 수 없으므로
Unofficial English translation
Inspections in the customs examination procedure for postal items, such as the opening, sampling, and component analysis of postal items, are of the nature of an administrative investigation aimed at the proper clearance of import and export goods and therefore cannot be regarded as a compulsory measure by an investigative agency;
Disposition
Dismissed Stated in the decision
상고를 기각한다.
Unofficial English translation
The appeal is dismissed.
Form of the test
Elements stated Stated in the decision
수출입물품에 대한 적정한 통관 등을 목적으로 한 행정조사의 성격을 가지는 것으로서 수사기관의 강제처분이라고 할 수 없으므로
Unofficial English translation
Are of the nature of an administrative investigation aimed at the proper clearance of import and export goods and therefore cannot be regarded as a compulsory measure by an investigative agency;
Factors
- 우편물의 개봉, 시료채취, 성분분석 등의 검사
- 수출입물품의 통관을 적정하게 함을 목적으로 한다는 점
- 적정한 통관 등을 목적으로 한 행정조사의 성격
- 특별한 사정이 없는 한 위법하다고 볼 수 없다
Unofficial English translation
• Inspections such as the opening, sampling, and component analysis of postal items
• The fact that they are aimed at the proper clearance of import and export goods
• The nature of an administrative investigation aimed at the proper clearance, etc.
• Cannot be regarded as unlawful absent special circumstances
Relation to precedent
States a new standard Read from the decision
우편물 통관검사절차에서 압수·수색영장 없이 진행된 우편물의 개봉, 시료채취, 성분분석 등 검사의 적법 여부(원칙적 적극)
Unofficial English translation
The legality of inspections in the customs examination procedure for postal items, such as the opening, sampling, and component analysis of postal items conducted without a search and seizure warrant (affirmative in principle)
Decisions referred to
None listed
Burden of proof
Not addressed Not in the decision
Open question and revisit condition
If the customs inspection was conducted from the outset at the request of an investigative agency or for the purpose of a criminal investigation, what circumstances constitute the special circumstances that would render it unlawful?
This reading will be re-examined if Article 246 or Article 257 of the Customs Act or the Notice on the Customs Clearance of International Mail is amended, or if a subsequent judgment addressing the relationship between customs inspection and the warrant requirement is handed down.
Cross-family AI independent reading & axis check
7 of 8 axes matched GPT-6 Astra (OpenAI, codex CLI) · 2026-10-16
When compared with an independent reading by another AI (GPT-6 Astra), which read only the original text without seeing the first reading, 7 of the 8 axes agreed, and the readings diverged on Axis 6 (Relation to precedent).
Axis 6 (Relation to precedent): Primary “States a new standard” vs Independent “Cannot be determined”
The first reading reads the fact that the original text derived the legality of a warrantless inspection from the administrative-investigative character of a customs inspection as a new standard, whereas the independent reading may be seen as having reserved confirmation because the relation to precedent is not expressly stated.
우편물 통관검사절차에서 압수·수색영장 없이 진행된 우편물의 개봉, 시료채취, 성분분석 등 검사의 적법 여부(원칙적 적극)Raw responses and comparison record: Protocol · Blind readings (JSONL) · Axis comparison (JSONL) · SHA-256 (JSON)
Lower-court contrast & scope of application
Lower-court reading vs. Supreme Court holding
Lower-court context: The court below held that no warrant was required for the sampling by the Mail Inspection Division of the Incheon Airport Customs or for the component analysis by the analysis laboratory, that the seizure without a warrant of mail voluntarily submitted by the defendant from whom the investigative agency received it was also lawful, and that the investigator securing de facto possession in the course of the controlled delivery was merely a special delivery method for identifying the recipient and not a seizure, which is a compulsory measure. It held that the trial court's exclusion of certain evidence was erroneous, but that the finding of guilt was proper.
Supreme Court standard: The Supreme Court, in light of the legal principle that a customs inspection has the character of an administrative investigation and the established legal principle that where customs officials voluntarily submit mail held by them in the course of their duties to an investigative agency, there is no seizure so long as possession has not been obtained compulsorily, affirmed the holding of the court below and dismissed the final appeal.
Distinguishing conditions
- Cases in which an investigative agency, borrowing the outward form of a customs inspection, took the lead and opened and analyzed mail for the purpose of a criminal investigation
- Cases in which correspondence that was not subject to customs clearance or domestic mail was opened
- Cases in which an investigative agency compulsorily obtained possession of the mail
Record verification notes
Before asserting legality on the ground that the matter was a customs inspection, one should confirm the entity that initiated the inspection and its purpose, the point at which the investigative agency became involved, and whether the subsequent seizure was carried out in the form of a voluntary submission.
From the official text
Points at issue
우편물 통관검사절차에서 압수·수색영장 없이 진행된 우편물의 개봉, 시료채취, 성분분석 등 검사의 적법 여부(원칙적 적극)
Unofficial English translation
The legality of inspections in the customs examination procedure for postal items, such as the opening, sampling, and component analysis of postal items conducted without a search and seizure warrant (affirmative in principle)
Summary of the holding
관세법 제246조 제1항, 제2항, 제257조, ‘국제우편물 수입통관 사무처리’(2011. 9. 30. 관세청고시 제2011-40호) 제1-2조 제2항, 제1-3조, 제3-6조, 구 ‘수출입물품 등의 분석사무 처리에 관한 시행세칙’(2013. 1. 4. 관세청훈령 제1507호로 개정되기 전의 것) 등과 관세법이 관세의 부과·징수와 아울러 수출입물품의 통관을 적정하게 함을 목적으로 한다는 점(관세법 제1조)에 비추어 보면, 우편물 통관검사절차에서 이루어지는 우편물의 개봉, 시료채취, 성분분석 등의 검사는 수출입물품에 대한 적정한 통관 등을 목적으로 한 행정조사의 성격을 가지는 것으로서 수사기관의 강제처분이라고 할 수 없으므로, 압수·수색영장 없이 우편물의 개봉, 시료채취, 성분분석 등 검사가 진행되었다 하더라도 특별한 사정이 없는 한 위법하다고 볼 수 없다.
Order
상고를 기각한다.
Unofficial English translation
The appeal is dismissed.
Provisions referred to
관세법 제1조, 제246조 제1항, 제2항, 제257조, 국제우편물 수입통관 사무처리(2011. 9. 30. 관세청고시 제2011-40호) 제1-2조 제2항, 제1-3조, 제3-6조, 구 수출입물품 등의 분석사무 처리에 관한 시행세칙(2013. 1. 4. 관세청훈령 제1507호로 개정되기 전의 것)
Read 2026-10-16 · Cross-read 2026-10-16. All quotes matched against the official text. The Chinese-character placeholders the court used for anonymised parties are given in their Korean readings, and parenthetical Chinese-character glosses are omitted.
Every entry is published only after all quotes have been matched character by character against the official text, and audited by an independent second reading from a different model family across all eight axes. Both agreed axes and text-grounded interpretive divergences are recorded openly. The ledger is a research record, not an assessment of the court or advice on any matter.
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