| abstract | - The Crime Scene Unit (CSU) is an investigation unit and part of the NYPD. In Los Angeles they are known as the Scientific Investigation Division (SID). The unit is responsible for forensic investigations of homicides and sexual assaults, as well as other crimes as deemed necessary. Members of the Crime Scene Unit assist the precinct detectives in the processing of a crime scene as well as determining the proper routing of evidence. The Crime Scene Unit has many tools at its disposal to process a crime scene including the materials needed to develop fingerprints, cast footwear and tire impressions, follow the trajectory of bullets fired through windows and the chemicals necessary to observe blood under special lighting conditions that would otherwise be invisible to the naked eye. The unit is also trained to process a crime scene in a hazardous environment, for example following a nuclear, biological or chemical attack.
|
