The Implementation Regulation for Leave of Prisoners Article 13

When a prisoner has an event under Paragraph 4, Article 29 of the Prison Act, the Prison shall report to the supervisory authority, notify the local police authority and forward the prisoner to the prosecution authority with jurisdiction for further investigation.
中文原文 受刑人外出實施辦法第13條
受刑人有本法第二十九條第四項之情形時,監獄應陳報監督機關及通知當地警察機關,並移送該管檢察機關偵辦。

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