How to Examine Crime Scene Evidence

Each crime scene is different and requires a specific approach by investigators. It is a complex process. However, there is a basic protocol that investigators use each time they examine crime scene evidence.

Instructions

1. Interview the victim and the first officer to arrive on the scene. Get each person's account of what happened, document the crime and how it was committed. Compare the accounts and note any similarities and differences.

2. Search for the evidence. Check to see if there are any remains of the crime such as fingerprints, footprints, tool marks or fibers. The evidence collected will help investigators come up with a possible motive. Investigators search the area for evidence to help them determine if the those interviewed have provided true accounts of what took place.

3. Photograph the scene so there is a visual record of the scene and any evidence. It is important to capture as much detail as possible. A photo can be used as evidence in assault crimes by recording the injuries that a victim may have sustained. This is a handy tool for recording where evidence was found before it is collected for further investigation.

4. Sketch an illustration of the crime scene. A technician normally creates a computerized sketch of the scene.

5. Process all of the evidence located at the crime scene. It is labeled and carefully packaged to make sure that it is properly preserved when it gets to the lab. The lab analyzes the evidence and sends it to the lead crime scene investigator.