Police Power Exercise Act Article 13
Selection of the third party to secretly collect data related to a specified person in accordance with the provisions prescribed in the proceeding article may be carried out after the police have identified the grounds and facts and obtained the approval of a police department or police precinct chief.Once the data collection is completed, the police shall terminate the cooperative relationship with the third party. However, if new grounds and facts set forth in paragraph 1 of the preceding Article emerge and necessitate continued data collection, the cooperative relationship may be continued after approval is obtained.When the data on the suspect or the facts that await verification are collected in accordance with paragraph 1 of the preceding article and are to be used as evidence in related legal proceedings, applicable procedural laws shall apply. If the third party is a witness, the provisions of the Witness Protection Act shall apply.
中文原文 警察職權行使法第13條
警察依前條規定遴選第三人秘密蒐集特定人相關資料，應敘明原因事實，經該管警察局長或警察分局長核准後實施。
蒐集工作結束後，警察應與第三人終止合作關係。
但新發生前條第一項原因事實，而有繼續進行蒐集必要且經核准者，得繼續合作關係。
依前條第一項所蒐集關於涉案對象及待查事實之資料，如於相關法律程序中作為證據使用時，應依相關訴訟法之規定。
該第三人為證人者，適用關於證人保護法之規定。
蒐集工作結束後，警察應與第三人終止合作關係。
但新發生前條第一項原因事實，而有繼續進行蒐集必要且經核准者，得繼續合作關係。
依前條第一項所蒐集關於涉案對象及待查事實之資料，如於相關法律程序中作為證據使用時，應依相關訴訟法之規定。
該第三人為證人者，適用關於證人保護法之規定。