Which of the following behaviors is a potential red flag during an investigation?

Significant changes in a suspect's routine can be a potential red flag during an investigation because such alterations may indicate that the suspect is trying to avoid detection or conceal their involvement in an illicit activity. For instance, if a suspect who typically follows a predictable schedule suddenly starts behaving erratically or alters their usual habits, it may suggest that they are aware of the investigation and are taking steps to distance themselves from the events in question. Investigators often look for patterns in behavior, and deviations from those patterns can signal an attempt to dodge scrutiny.

In contrast, consistent documentation of evidence, regular updates on investigation status, and establishing credibility with witnesses are all practices that contribute to a thorough and transparent investigation. These behaviors are indicative of proper investigative techniques and are essential for building a strong case and ensuring that the process is credible and organized.