There are key informants in every village, which reports about the movement of poachers and are monetarily compensated for information they provide to the park authorities.

- the case study approach structures open-ended exploration through observation and interrogation of key informants.

The principal investigators will be responsible for interviewing key informants about the way the system has been modified in recent years.

Film director Mickey Moran was a key informant during the inquest, and he was a state witness in the subsequent trial.

Surveillance caught me talking to or meeting with a number of our key informants on the orgcrime strike force.

I explained that my objective had been to find a "key informant" for my work.

The researcher begins to build relationships with people, and certain individuals emerge as 'key informants' for the research.

The documentary features interviews with numerous people involved in the club's scene, as well as key informants in Gatien's high-profile trial.

From a key informant familiar with the dementia sufferer and his or her home circumstances.

But without their key informant inside, his investigation with Detective Napoli had hit a wall.