After conducting an undercover investigation of a Telegram chat room where sexually manipulated images were being circulated, the Busan Metropolitan Police Agency (부산경찰청) identified a current police officer in the traffic division of Seoul Dongdaemun Police Station (서울 동대문경찰서) among those suspected of distributing the images. The officer was reportedly arrested last month on suspicion of possessing sexual exploitation materials and fabricated sexual content, as well as creating and distributing sexual deepfakes. Police searched the officer’s phone and other devices in August, and forensic analysis found about 5,600 illegal files.

Background and context

The case has drawn attention not only because of allegations that the officer created and possessed illegal images, but also because a current police officer was identified as a suspect during an undercover investigation in which investigators entered a chat room to track distributors. Investigators reportedly entered the chat room undercover with court authorization in December 2025 and pursued suspected distributors for several months. Undercover investigations were first permitted in 2021 for crimes involving minors, and in June 2025 their scope was expanded to digital sex crimes involving adult victims.

The seized files included approximately 2,600 manipulated sexual images and videos, approximately 1,600 items of child and adolescent sexual exploitation material, and approximately 1,300 illicitly filmed videos. Since each figure is approximate, rather than simply adding the category totals and comparing them with the overall count, it is important to focus on the fact that investigators put the total number of illegal files at about 5,600. Investigators suspect that the officer created more than 400 AI images or videos depicting acquaintances nude between March 2022 and July 2026.

Investigators also believe the officer secretly filmed women’s bodies and distributed dozens of manipulated sexual images through Telegram between August 2025 and April 2026. These are all allegations in the investigation as currently reported; no court finding of guilt has been confirmed. The officer reportedly had been investigated in a similar case before being appointed and received a deferred prosecution disposition. A deferred prosecution is a decision by prosecutors to withhold formal charges after considering the circumstances of the offense and the suspect’s situation.

What this news means

If the people depicted are acquaintances, the fact that real photographs were transformed into sexual images or that secretly filmed videos were circulated could have a significant impact on their privacy and safety. Images made with AI do not cause less harm to the people depicted. In particular, since allegations include both creation and distribution, it is important that the investigation is examining both the stage at which images were created and the stage at which they spread online.

In terms of investigative methods, the case shows that court-authorized undercover work was used to track distributors inside an online chat room. However, these reports alone do not show whether other chat-room participants or additional suspected distributors were identified, or what evidence the undercover investigation obtained. How far investigators have traced the distribution network remains an open question.

The police department’s personnel response and screening procedures are also at issue. Dongdaemun Police Station said it placed the officer on standby immediately after being notified that the Busan police had begun an investigation, and later removed the officer from duty. Since reports said the officer had received a deferred prosecution disposition in a similar case before being appointed, questions may arise about how that history was handled during the appointment review. But the available information does not support a definitive conclusion about the appropriateness of the appointment process or responsibility for it.

For example, if someone discovers an image in which their face or body has been digitally combined with another image, it may be important to avoid forwarding or reposting it to others, so as not to expand its circulation, and to check the investigative authorities’ verification process and official guidance. This does not mean that a victim in this case actually reported the matter or took any particular action.

Relevant procedures and support information

A suspect in custody may request a review of the legality of detention (구속적부심사), a court procedure to determine whether the detention is lawful and remains necessary. According to guidance based on consultation cases from the Korea Legal Aid Corporation (법률구조공단), the suspect, defense counsel, legal representative, spouse, lineal relative, sibling, family member, cohabitant, or employer may submit the request. Eligibility and procedure are governed by Article 214-2 of the Criminal Procedure Act (형사소송법).

After formal charges are filed, the person is a defendant rather than a suspect and may apply for bail. The court decides whether to grant bail and on what conditions, such as a pledge to appear or restrictions on residence, based on the specific circumstances; bail is not automatically granted. If the defendant fails to appear in court without a valid reason or violates the conditions, bail may be revoked or the bail bond forfeited. It is therefore important to distinguish a review of the legality of detention from bail, as they differ in when they may be requested and who may request them. This is general information about procedure; reports have not confirmed whether anyone involved in this case actually made either request.

Differences among reports

Reports differ on when the officer was appointed. One report said the appointment took place in April 2024, while another said it took place in December 2023. This discrepancy needs to be resolved to accurately assess the periods of alleged conduct before and after the appointment.

Reports also describe the officer’s custodial status differently, using terms closer to “detention” or “arrest” in some accounts and “arrested and held in custody” in others. However, reports agree that the officer was taken into custody last month, and the details of the procedural timeline are difficult to establish clearly from the information provided.

What is confirmed and what remains unknown

Confirmed facts

  • The Busan Metropolitan Police Agency conducted an undercover investigation of a Telegram chat room where sexually manipulated images were circulated.
  • Investigators entered the chat room undercover with court authorization in December 2025.
  • Police searched the officer’s phone and other devices in August and found about 5,600 illegal files through forensic analysis.
  • Dongdaemun Police Station said it placed the officer on standby and later removed the officer from duty.
  • Reports said the officer received a deferred prosecution disposition in a similar case before being appointed.

What remains unknown

  • It has not been confirmed what charges prosecutors will formally bring or what ruling the court will issue.
  • It is not known whether other chat-room participants or additional suspected distributors were identified.
  • It has not been confirmed how the deferred prosecution disposition before the officer’s appointment was reviewed during the recruitment process.

What readers should check

  • Since reports differ on the appointment date, keep that discrepancy in mind when citing the periods of alleged conduct before and after the appointment.
  • If a victim or family member is seeking information about detention procedures, note that a review of the legality of detention during the investigation and bail after charges are filed differ in who may apply and when. Eligibility and conditions should be checked for each specific case.
  • Check whether investigators or the officer’s police station release additional information, while distinguishing allegations from a final court ruling.

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