What needs to be restricted to ensure the protection of a crime scene?

Restricting access and exits is crucial for protecting a crime scene to maintain its integrity. By limiting who can enter or exit the area, you reduce the risk of contamination or alteration of evidence. Unauthorized individuals might inadvertently disturb physical evidence or create obstacles for the investigation, leading to compromised findings.

In addition to protecting physical evidence, controlling access ensures that only authorized personnel, such as law enforcement and forensic experts, can approach the scene. This control allows for a structured investigation process, where evidence can be gathered methodically. Furthermore, it helps to preserve the scene's condition for any necessary legal procedures or court appearances, ensuring that the collected evidence stands up to scrutiny.

While witness statements, cameras and lights, and emergency services play important roles in the overall response to a crime, they do not specifically address the need to maintain the physical integrity and security of the crime scene in the same direct manner as restricting access and exits does.