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Crime Scene Investigations Unit

In many criminal investigations, it is necessary to determine and prove through various types of physical evidence, that a particular person was present at the scene of a crime. For his reason the collection and forensic examination of evidence, such as blood, hair, fibers, soil, and glass is routinely practiced. Since the criminal must either be walking or driving as they enter or leave a crime scene, it is important that shoe and tire impressions are often collected and provide excellent physical evidence.

The Crime Scene Investigation (CSI) Unit is charged with the processing of crime scenes and for providing expert court testimony. CSI photographs, collects, and examines evidence discovered, and collected at crime scenes. CSI technicians are trained to photograph, prepare and collect footprint, tool, and tire impressions.

CSI technicians are also trained in the use of the Automated Fingerprint Identification System (AFIS) and are experts at examining and comparing latent prints.

Firearms recovered from crime scenes and from arrestees are carefully preserved and examined by CSI and the Kansas Bureau of Investigation for DNA analysis.

As noted below from the FBI's bulletin report, crime scene processing and proper evidence collection is crucial to the successful investigation and prosecution of crimes.

"Crime scene examination is a forensic science activity that helps investigators identify, interpret, and recover physical evidence from a crime scene so that the evidence can be physically analyzed by the investigator or forwarded to the appropriate scientific discipline for further scientific analysis. The investigator is also responsible for the management of the crime scene, any attending scientific specialists, and the case management of evidence. In order to undertake this responsibility, the investigator must have the competence to record the crime scenes, as required, by notes, diagrams, photography, and video. The collection procedures must be of the highest level in order to provide integrity of exhibits and prevent any cross-contamination, particularly with trace evidence."

Other public service duties that the CSI perform are fingerprinting applicants for Police, Fire, Security Guards, Solicitors, Taxi, Bar cards, and Gun purchase permits.


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