confidential informant

基本解释

The identity of the informant shall be kept confidential.
前项通报人之身分资料应予保密。
The authorities receiving the report shall keep confidential the relevant information of the informant, and protect the legitimate rights and interests of the informant.
接受举报的机关应当对举报人的相关信息予以保密，保护举报人的合法权益。
I cannot over-emphasize this: always take the time to personally verify as much of the information from a confidential or good-citizen informant as time and strategy will permit.
因此警察必须花时间亲身去验证来自机密线人或是善良公民提供的情报信息，在时间和策略许可的条件下警察应当尽可能多的亲身验证其内容，无论如何强调这一点都不过分。

Solomon Barnes, whose confidential informant, along with undercover deputies, placed bets on youth football during the police investigation.
FORBES: Coaches Among Those Arrested in South Florida Youth Football Gambling Case