What should be prioritized regarding evidence safety during an investigation?

Securing the evidence from contamination or loss is crucial during an investigation because it ensures the integrity and reliability of the evidence collected. When evidence is compromised, whether through contamination from environmental factors or mishandling by personnel, it can lead to inaccurate conclusions, undermine the prosecution's case, or even result in wrongful convictions. The legal process relies heavily on the quality of evidence presented, so maintaining a secure chain of custody is essential for any investigation.

While minimizing the number of personnel on the scene can help prevent unnecessary contamination, and maximizing evidence collection is important for thorough investigations, the ultimate priority must always be the preservation of each piece of evidence. Witness statements, while significant for context and understanding the scenario, do not replace the physical evidence that can be scientifically tested and used in court. Thus, the focus on securing evidence from loss or contamination is paramount in maintaining the investigative process's integrity and effectiveness.