Feb 24th Forensics.docx

Feb 24th Forensics Crime scene investigation Evidence Interpretative value: value of an item of evidence is not based solely on its mere presence in the crime scene Context vs. Content Classifications for context: Predictable- changes that occur with regularity Unpredictable- changes that occur randomly or unexpectedly Transitory- fleeting, random Relational- physically placed items in the scene Functional- operating condition of items Investigation Scene protocol Safety Measurements Evidence collection Evidence preservation Photography Delegation Chain of Custody Crime scene Dynamic Area in which the majority of the physical evidence associated with the crime is obtained Provides investigators with a starting point to piece together the circumstances of what happened. Activities Collection and preservation of evidence Procedural tactics Duties of patrol officers at scene Notifications Preparation of forms Overtime allowance Allocation of equipment Case- officers responsibility Confidential information Essential officials at a scene Law enforcement Fire EMS Social/child protective services Medical examiner Forensic unit Detectives Law enforcement First officer at the scene Crime scene manager Crime scene investigative unit Detectives Patrol officers No one element or person is more important than another First officer at the scene The success of a criminal investigation and resolution of the crime depends on him Duties Initial response Be aware of any persons/vehicles leaving the scene Make initial observations to assess scene Safety procedures Ensure there is not immediate threat to other responders Survey scene for dangerous persons and control situation