Regulations Governing Rewards for Reporting Violations of the Immigration Act Article 4

To facilitate the reporting of violations of the Act, the NIA shall set up dedicated phone, fax, mailbox and email.
中文原文 舉發違反入出國及移民法事件獎勵辦法第4條
移民署為便利舉發違反本法規定之事實,應設專用電話、傳真機、郵政及電子郵件信箱。

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