On what basis are supplementary reports, like original occurrence reports, founded?

Supplementary reports, similar to original occurrence reports, are primarily founded on the facts recorded in an officer's notebook. This is because an officer's notebook serves as an official log of observations, actions taken, and information gathered during the course of a police investigation. It provides a reliable and initial account of events that can be referenced when creating supplementary reports, ensuring that the details are accurate and consistent with the officer's first-hand documentation.

Facts from the notebook can include specifics such as dates, times, locations, and descriptions of activities or statements made by individuals relevant to the case. This information is crucial for reinforcing the validity of the supplementary report, as it captures the objective data observed by the officer, which serves as a factual basis for any follow-up investigations or additional inquiries.

While the personal observations of the officer, opinions of witnesses, and physical evidence also play important roles in the overall investigation, they are typically considered supplementary to the factual documentation found in the officer's notebook. The notebook represents the essential foundation upon which supplementary reports build, ensuring that reports remain anchored in factual representation of the incident.