Texas Basic Peace Officer Certification Practice Exam

What should a peace officer do first upon arriving at a crime scene?

1. Begin interviewing witnesses

2. Secure the scene to prevent contamination

3. Call for backup assistance

4. Document all evidence found

The correct answer is: Secure the scene to prevent contamination

When a peace officer arrives at a crime scene, the first priority is to secure the scene to prevent contamination. This is crucial because a crime scene can contain valuable evidence that could be altered or destroyed if not properly protected. By establishing a perimeter and controlling access to the area, the officer ensures that any potential evidence, such as physical traces, fingerprints, or personal belongings of individuals involved, remains intact for investigation. Securing the scene also involves assessing the situation for safety, checking for potential threats, and determining if any injured persons require immediate assistance. It sets the foundation for all subsequent investigative actions, including interviewing witnesses, documenting evidence, and collecting information. Ensuring that the scene is secured helps maintain the integrity of the investigation and allows for a thorough and methodical examination of the evidence later on.