The Anti-Corruption Informant Rewards and Protection Regulation Article 11

If the Informant falsely accused others of involving corruption and malfeasance case and the court has judged them guilty, the report-accepting authority shall recover any and all paid prize.If the Informant of the aforementioned circumstance passed away, any paid prize shall be recovered from the heir.
中文原文 獎勵保護檢舉貪污瀆職辦法第11條
檢舉人誣告他人貪污瀆職,經法院判決有罪確定者,由受理檢舉機關追回已核發之獎金。
前項情形,檢舉人死亡者,向其繼承人追回已核發之獎金。

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