Social Order Maintenance Act Article 39
The investigation into an offense against this Act shall be conducted by a police agency as soon as the offense becomes known to the police whether because it has been discovered by police, being tipped off by a citizen, the offender has turned themselves in or because of other circumstances.
中文原文 社會秩序維護法第39條
警察機關因警察人員發現、民眾舉報、行為人自首或其他情形知有違反本法行為之嫌疑者，應即開始調查。