Crime scene technicians, or CSTs, must be available to collect and analyze evidence whenever a crime occurs. Because crime can occur at any time, working hours for a CST can be long and irregular. Our CSTs work in our crime laboratory, collecting, processing and explaining the materials left behind at crime scenes.


CSTs collect evidence that officers and detectives use to investigate crimes. Evidence includes fingerprints, bodily fluids, weapons, fibers and other physical materials that may help identify suspects. CSTs may use chemicals, black lights, tweezers and evidence collection kits to identify and collect physical materials from crime scenes, then preserve and record the evidence before transporting it to a crime laboratory for analysis.


CSTs photograph the area where a crime has taken place to document the physical state of the scene, and they take notes about where evidence is located as they collect it. The notes help CSTs prepare reports of their findings. Blood spatter and the location of evidence may help detectives recreate the events of the crime.


CSTs prepare reports of the results of a crime scene analysis for detectives to use in their investigations. In the courtroom, CSTs may explain their investigation techniques, analysis and the results of laboratory work.


Crime Scene Unit

Function





Collecting






Recording





Reporting