As a forensic technician for a small agency, my top priority when working a crime scene is to secure the scene and evidence, and to process the scene correctly. This means taking steps to preserve the integrity of the scene and to collect any evidence that may be present.
Securing the scene
The first step in securing the scene is to establish a perimeter. This involves cordoning off the area around the crime scene to prevent unauthorized access. Once the perimeter is established, I will assess the scene for any hazards, such as biological hazards, chemical hazards, or electrical hazards. If any hazards are identified, I will take steps to mitigate them.
Next, I will document the scene. This involves taking photographs and videos of the scene from all angles. I will also make a sketch of the scene, noting the location of any evidence that is present.
Processing the scene
Once the scene is secure and documented, I will begin to process it. This involves searching the scene for any evidence that may be present. I will also collect any evidence that is found.
When searching the scene, I will use a variety of techniques, including visual inspection, fingerprinting, and trace evidence collection. I will also use any specialized equipment that is available, such as metal detectors and ground-penetrating radar.
When collecting evidence, I will use proper procedures to avoid contamination. I will also package the evidence in a way that preserves its integrity.
Specific steps
Here are some specific steps that I would take to secure and process a crime scene with a brand-new detective:
- Communicate with the detective. It is important to communicate with the detective throughout the crime scene investigation. This will help to ensure that we are on the same page and that we are collecting the evidence that is needed.
- Secure the perimeter. I would work with the detective to establish a perimeter around the crime scene. This would involve cordoning off the area with police tape or other barriers.
- Assess the scene for hazards. I would assess the scene for any potential hazards, such as biological hazards, chemical hazards, or electrical hazards. If any hazards were identified, I would take steps to mitigate them. For example, I might wear personal protective equipment (PPE) or call in a specialist to handle the hazard.
- Document the scene. I would document the scene by taking photographs and videos from all angles. I would also make a sketch of the scene, noting the location of any evidence that is present.
- Process the scene. I would process the scene by searching for and collecting evidence. I would use a variety of techniques, including visual inspection, fingerprinting, and trace evidence collection. I would also use any specialized equipment that is available.
- Package the evidence. I would package the evidence in a way that preserves its integrity. I would also label the evidence with the date, time, and location where it was found.
- Submit the evidence to the lab. I would submit the evidence to the lab for analysis.
Tools and resources
The following tools and resources are needed to secure and process a crime scene:
- Safety gear: This includes gloves, goggles, a mask, and a respirator.
- Evidence collection materials: This includes bags, envelopes, and labels.
- Photography equipment: This includes a camera and a tripod.
- Sketching materials: This includes paper and pencils.
- Specialized equipment: This might include a metal detector, ground-penetrating radar, or a fingerprint kit.
Working with a new detective
When working with a new detective, it is important to be patient and understanding. The detective may not be familiar with the crime scene investigation process. It is important to explain the process to the detective and to answer any questions that they may have.
It is also important to be professional and courteous. The detective may be under a lot of pressure, so it is important to be supportive and to help them in any way that you can.
Conclusion
Securing and processing a crime scene is a critical part of the crime scene investigation process. By following the steps outlined above, I can help to ensure that the scene is preserved and that all relevant evidence is collected.
