Code of Criminal Procedure Article 93

An accused or a suspect, arrested with or without a warrant, shall be interrogated immediately.During the investigation, if the prosecutor deems it necessary to detain the accused or suspect after interrogation, a petition that states the facts and details of the alleged criminal offenses, legal grounds, evidence and reasons for custody, along with prepared written copies, the case file and evidence, shall be submitted to the concerned court for a detention order, within 24 hours of making the arrest, with or without a warrant. However, documentation with supporting facts that actions, such as destroying, fabricating, and altering evidence, or colluding with accomplices or witnesses, that endanger the integrity of the investigation, or that endanger other people's lives, or bodies, should be submitted separately with clear reasoning, requesting that the court use appropriate approaches to restrict or prohibit the accused and the defense attorney from obtaining such case file and evidence.Where there is not a petition to the court concerning the situation as described in the preceding paragraph, the prosecutor shall immediately release the accused. However, if any one of the situations, as described in Article 101 Paragraph 1, or any of the subparagraphs of Article 101-1 Paragraph 1 occurs, although it is deemed unnecessary to detain, then release on bail, release to other's custody, or house arrest may be ordered. But If release on bail, release to other's custody, or house arrest cannot be ordered, although deemed necessary, then a court order for detention is still required.The provisions as described in the preceding three paragraphs apply mutatis mutandis to where the prosecutor is accepting the accused as forwarded by the court in accordance with the Juvenile Delinquency Act, or by the military court in accordance with the Code of Court Martial Procedure.When accepting the petition for detention, as described in the preceding three paragraphs, the court shall immediately begin the interrogation after giving the accused and the defense attorney a written copy of the petition. However, if the interrogation is not completed by late night, the accused, the defense attorney, or the person acting as the accused's assistant, may petition the court to continue interrogation during the daytime of the following day. Unless the court has proper justification, the court shall not refuse the request. If the petition is accepted late at night, the interrogation may begin during the daytime of the following day.The term late night, as described in the proviso of the preceding paragraph, refers to the hours between 11 pm through 8 am the next day.