How Long Can Korean Police Detain a Foreigner?

Key Summary

After an arrest, Korean police must seek a detention warrant within 48 hours or release the suspect. If a warrant is issued, pre-indictment detention can run for up to around 30 days in total, counted from the arrest.

After an arrest in Korea, investigators must seek a detention warrant within 48 hours or release the suspect. If a court issues that warrant, pre-indictment detention may run for up to around 30 days in total, counted from the time of arrest, depending on how the investigation proceeds.

Under Articles 200-2 and 200-4 of the Criminal Procedure Act, once a foreign national (or anyone) is arrested in Korea, investigators face a hard deadline: request a detention warrant (구속영장) from a court within 48 hours, or release the person. This applies regardless of nationality. If the 48 hours pass without a request being filed, continued detention on that basis is not lawful.

If police do seek a detention warrant, the suspect appears before a judge for a warrant review hearing (영장실질심사). The judge weighs flight risk, risk of evidence destruction, and the severity of the alleged offense before deciding whether to issue the warrant. Defense counsel can attend and argue against detention on the specific facts of the case.

If a detention warrant is issued, police may hold the suspect for up to 10 days before the case must be transferred to prosecutors. This period is not automatically used in full; it depends on how quickly the investigation proceeds.

Once the case is handed to a prosecutor of the Public Prosecution Service (공소청, which replaced the Prosecutors' Office on October 2, 2026), the prosecutor may hold the suspect for up to another 10 days, and this period can be extended once, by up to 10 more days, with the court's permission (Criminal Procedure Act, Articles 202, 203 and 205). Combining the police and prosecution stages, pre-indictment detention can therefore run for up to around 30 days in total, with the clock starting from the moment of arrest — though many cases resolve, one way or another, well before reaching that maximum.

If the case proceeds to indictment, detention during the trial stage is governed by a separate framework under the court's own authority (Criminal Procedure Act, Article 92), with periods the court can renew as the case proceeds. This is a different phase from the pre-indictment detention described above, with its own timelines set by the court handling the trial.

Not every arrest leads to the maximum detention period. Some suspects are released after the initial 48 hours because no detention warrant is sought or one is denied; some are released partway through the police or prosecution stage if the investigation concludes there is insufficient basis to continue holding them. Whether an extension is granted, and for how long, depends on the specific facts, the offense charged, and how the investigation is progressing — it is not something that can be predicted from the outside before a case has actually been reviewed.

Nationality does not change the statutory framework described above; a foreign national arrested in Korea goes through the same 48-hour rule, the same warrant hearing process, and the same police-then-prosecutor detention structure as a Korean national. What it does change is practical logistics: language at the warrant hearing, communication with family abroad, and coordination with a consulate. A foreign national has the right to request consular notification under Article 36 of the Vienna Convention on Consular Relations, in addition to the right to remain silent and the right to defense counsel that apply from the moment of arrest.

Defense counsel appointed at this stage, under Articles 30 and 32 of the Criminal Procedure Act, can attend police questioning, review how the investigation is developing, and represent the suspect at the warrant hearing and at any extension request. Depending on the facts, counsel may also argue for release rather than continued detention at each stage. None of this guarantees release or a shorter detention period, but it means the decisions being made about detention are not happening without anyone advocating for the suspect's side.

Frequently Asked Questions

• Criminal Procedure Act (형사소송법), Articles 92, 200-2, 200-4, 202, 203, 205 — Korea Law Information Center — official Korean text
• Criminal Procedure Act — unofficial English translation (KLRI)
• Vienna Convention on Consular Relations (1963), Article 36 — official UN text

Last updated: September 30, 2026 — Attorney Doyun Lee (이도연), Korean Bar Association-certified criminal law specialist.

If detention at entry is a real possibility, having a lawyer already engaged before you land means the first hours of this timeline are not spent finding representation from scratch. A Provisional Retainer (가선임) registers your travel details in advance and can carry directly into Emergency Criminal Representation if detention occurs. See our Pre-Entry Risk Review page.

This article provides general information about Korean criminal procedure and does not constitute legal advice for a specific case. It does not guarantee release, detention, or any particular outcome or timeline. About the author: Attorney Doyun Lee (이도연), Korean Bar Association-certified criminal law specialist — see the attorney profile.

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