Gangnam Police Station in Seoul has reportedly booked Gwacheon Se-yeon, K, and one other person without detention on suspicion of violating the Narcotics Control Act. The booking reportedly took place on July 30, 2026. Based on the publicly available information, the case remains at the stage of a police investigation and statements from the people involved.
Key Developments
Police are reportedly investigating the allegation that K took the sleeping medication zolpidem, which was allegedly obtained through a proxy prescription via an acquaintance, together with Gwacheon Se-yeon in June 2026. However, how the medication was obtained and taken, as well as the scope of each person’s legal responsibility, has not been determined.
Being booked without detention means that an investigation has begun; it does not mean that guilt has been established or that the investigation has concluded.
Current Status
During a personal livestream, Gwacheon Se-yeon claimed that she had never received a proxy prescription. She also explained that she came under investigation after taking medication belonging to her partner, K, and subsequently going to an emergency room.
Gwacheon Se-yeon claimed that she had black hair when questioned by police and had already submitted 100 strands of hair, and that bleaching her hair afterward was unrelated to the investigation. These statements are presented as the person’s own explanation and should be distinguished from the results of the police investigation.
Implications
The annex to the Enforcement Decree of the Narcotics Control Act, published by the Korea Law Information Center, lists psychotropic substances as substances subject to legal control. However, the publicly available information does not establish the complete product details, dosage, prescription holder, or legal responsibility related to the medication mentioned in the case.
Accordingly, the key points currently confirmed are that the people involved were booked without detention and are under investigation over allegations involving psychotropic substances, and that Gwacheon Se-yeon denied or explained parts of the allegations concerning the proxy prescription and how the medication was taken.
Next Checkpoint
The status of the case after the booking should be reviewed again if a follow-up police announcement or the outcome of the investigation becomes public. The currently available information does not confirm a conviction, indictment, or conclusion of the investigation.
Source Check
[Korea Ilbo - Gwacheon Se-yeon speaks out about being booked by police](https://www.hankookilbo.com/news/article/A2026090208150004688) · [Newdaily - BJ couple Gwacheon Se-yeon and K booked over alleged use of psychotropic substances](https://www.newdaily.co.kr/site/data/html/2026/09/02/2026090200138.amp.html) · [Newsis - BJ Gwacheon Se-yeon, accused of drug use, speaks out](https://nwww.newsis.com/view/NISX20260902_0003772380) · [Korea Law Information Center - Annex 6 to the Enforcement Decree of the Narcotics Control Act](https://www.law.go.kr/LSW/flDownload.do?bylClsCd=110201&flSeq=107841121&gubun=)