What is the first step when approaching a crime scene?

Securing the scene is a critical first step when approaching a crime scene because it ensures that the area remains undisturbed and protects potential evidence from being contaminated or altered. By establishing a perimeter and controlling access to the scene, investigators can maintain the integrity of physical evidence, which is vital for the investigation. This step also provides safety for both the personnel involved and the public, preventing anyone from inadvertently interfering with the scene.

After the scene is secured, additional steps such as documenting the surroundings, interviewing witnesses, and calling for backup can be effectively carried out, but those actions rely on the prior establishment of a secure environment. Thus, securing the scene forms the foundation upon which a successful investigation is built.