- Forensic DNA Evidence Collection at a Crime Scene: An Investigator’s Commentary

As a former detective sergeant with 28 years of service, including 20 years assigned to the Forensic Investigations Division of the New York Police Department (NYPD), I believe that the most important factor pertaining to an investigation is the value of the crime scene. It is imperative that, from the outset, the crime scene be handled properly by rst responders. e scene must be properly safeguarded and preserved to best maintain its integrity, since it is the crucial source of probative evidence. Proper handling of the crime scene ultimately will ensure a successful conclusion to an investigation and prosecution.