Seven S's of Crime scene investigation LATEST 2024

Securing the scene responsibility of the first-responding police officer (first responder), safety of individuals is first priority. Preservation of evidence is second priority. First responder has to restrict all unauthorized persons from entering. Locard's exchange principle may occur. -first responder keeps security log of all those who visit the crime scene -may call more teams of experts to sent to scene Separating the witnesses Next priority. Witness are not allowed to talk with one another. Separation avoids witnesses to work together to create a false story (collusion). Questions asked: -when did the crime scene occur? -Who called in the crime? -Who is the victim? -can the perpetrator be identified? -What did you see happen? -Where were you when you observed the crime scene? Scanning the scene Forensic examiners then scan the scene to determine where photos should be taken. Determination of Primary crime scene and secondary crime scene and priorities assigned regarding examination. Seeing the scene Crime scene examiners see the scene. Photos of overall area and close ups should be taken. Triangulation of stationary objects should be included in the photos as reference points. View should be taken at different angles and distances, close ups of evidence and bodies should be taken. S