Social Order Maintenance Act Article 42

Police may restrain a person who is caught red-handed in the commission of an offense against this Act and notify them to report to a police agency on the scene. Police may take the person back to the police agency by force. Nonetheless, the preceding article may apply if the offender’s name, residency or temporary residency is known to the police and the possibility of fleeing is slim.
中文原文 社會秩序維護法第42條
對於現行違反本法之行為人,警察人員得即時制止其行為,並得逕行通知到場;其不服通知者,得強制其到場。
但確悉其姓名、住所或居所而無逃亡之虞者,得依前條規定辦理。

English translation for reference only; the Chinese text prevails. Not legal advice.