What is the first step in conducting a crime scene investigation?

The first step in conducting a crime scene investigation is securing the scene to prevent contamination. This is crucial because an uncontrolled scene can lead to the alteration or destruction of evidence. By securing the area, investigators can establish a perimeter, limit access to authorized personnel, and maintain the integrity of the evidence present. Securing the scene ensures that all physical evidence remains untouched and that any potential witnesses can be later interviewed in an orderly manner. This foundational step is vital for establishing a reliable and accurate investigation and ultimately supports the integrity of the judicial process.