Which of the following is NOT a source of information for criminal investigators?

Television networks are not considered a direct source of information for criminal investigators. While news broadcasts may provide updates on criminal cases and raise public awareness, they do not function as a reliable or firsthand source for investigation purposes. Investigators typically rely on primary sources that can offer accurate, firsthand information relevant to the case at hand.

In contrast, utilities can provide valuable information such as records of service usage or location data that may link a suspect to a scene. Informants can give crucial insider knowledge or tips about criminal activities that help in gathering evidence. Surveillance involves the monitoring of activities, which can capture evidence directly related to criminal acts. This distinction highlights the critical nature of primary and investigative-focused sources compared to general media reporting.