The Enforcement Rules of the Prison Act Article 51

During maintenance or cancellation of any prisoner’s parole, if the Prison discovers that the parole should be or may be cancelled in accordance with Article 78 of the Criminal Code or Article 74-3 of the Rehabilitative Disposition Execution Act, the Prison shall only cancel the parole and shall not engage in further handling.
中文原文 監獄行刑法施行細則第51條
監獄辦理維持或廢止受刑人假釋中,發現已有刑法第七十八條或保安處分執行法第七十四條之三所定應撤銷或得撤銷假釋之情形者,應僅辦理撤銷假釋,其餘不予以處理。

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