first thing an investigator should do upon arriving at a crime scene

 

The **first thing an investigator should do upon arriving at a crime scene

This includes:

1. **Confirm Safety**

   * Check for any immediate danger such as armed suspects, fire, explosives, or hazardous materials.

   * Ensure officers, victims, and bystanders are safe.

2. **Preserve Life**

   * If victims are injured, provide or arrange medical assistance immediately.

   * Saving lives always takes priority over preserving evidence.

3. **Secure and Isolate the Crime Scene**

   * Establish a perimeter using tape, barriers, or guards.

   * Restrict access to authorized personnel only to prevent contamination or destruction of evidence.

4. **Prevent Contamination of Evidence**

   * Avoid touching, moving, or disturbing objects unless necessary.

   * Keep a record of everyone entering or leaving the scene.

5. **Conduct Preliminary Observation**

   * Make an initial assessment of the scene.

   * Note visible evidence, possible entry/exit points, and anything unusual.