Crime Scene Investigation

The Johnson County Sheriff's Office Criminalistics Laboratory Crime Scene Investigation section responds to and processes a vast spectrum of crime scenes including homicides and other death investigations, sexual assaults, battery cases, robberies, burglaries, etc. CSIs may process crime scenes, people, or vehicles. Members of the section also process victims of assault and attend autopsies. The section is well trained and capable of investigating any crime scene discovered in the cities or rural areas of Johnson County.

Documentation of a crime scene utilizes photography, diagrams, and written reports. The section also utilizes a 3D laser scanner to quickly capture millions of data points at a scene.  This allows investigators to virtually walk through a scene without the potential of cross-contamination and preserves the scene forever for future examinations or trials.  Evidence collection includes all forms of biological specimens, trace evidence, firearms related evidence and trajectory information, footwear, tire tracks, bloodstains, fingerprints, and any and all materials of evidentiary value found at a crime scene. Advanced techniques such as chemical enhancement and detection of blood and alternate light source use for detection of biological fluids or other trace evidence may also be utilized. The evidence, once collected, is submitted to the various sections of the laboratory for analysis.

Senior members of the CSI section specialize in shooting incident reconstruction, bloodstain pattern analysis, or fire investigation.

Members of the section testify in court as requested and constantly strive to improve their end product. Training for section members is an on-going process to keep up with the most advanced investigative techniques.