PHYSICAL EVIDENCE MANUAL - Crime Scene Investigator Network

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Physical Evidence Manual examination. Any number of paper specimens may be placed in a single envelope for submission. Any latent prints of identifiable quality will be imaged and the original lifts or evidence will be returned to the submitting agency. If the original lift is not available, non jpeg images of the latent, with a scale in the image, may be submitted. (See the Division policy on submitting digital images).. After comparisons are conducted with any known suspect’s prints or submitted inked standards, the remaining unidentified latent fingerprints will be evaluated for AFIS quality and may be searched against the AFIS database. Unidentified latent fingerprints of AFIS quality will be entered into the unidentified latent fingerprint database for future searches against the database. If identification is effected as a result of this search the submitting agency will be notified in an official laboratory report. In the event the submitting agency should identify any latent fingerprints that should be cleared for any reason, the agency should notify the laboratory so these latent fingerprints can be purged from the unidentified latent fingerprint database. Submission of Inked Prints for Comparison Purposes The investigator should take inked prints from all persons known to have legitimately handled the evidence (elimination prints) to permit comparison with any latent prints, or if the individual already has inked prints on file, list their SID number on the Form 49 when submitting the evidence. Often latent prints found at the scene of a crime involve areas of the palms, second and third joints of the fingers, and the finger sides and tips. For this reason the analyst may request that the investigator take complete inked prints (major case prints) of all ridges on the hands of suspects or persons known to have legitimately handled the evidence (elimination prints) to permit comparisons. Palm prints should always include prints of the lower finger joints, as well as an extra print of the outer edge of the palm. Inked prints for comparison with latent prints should be submitted with the evidence itself. Identifying the Deceased The responsibility for identifying deceased persons rests with the State Medical Examiners (ME) Office. The Forensic Services Division often assists the ME in identifying decomposed remains. Requests of this type should be made through the State ME’s Office. Adopted: May 2002 Revisions: 6 Last Revision: January 31, 2008 10-5
Physical Evidence Manual Routine identifications for the purpose of clearing a Complete Criminal History (CCH) record should be made through the Identification Services Section of LEDS in Salem. Figure 4: Chemical processing of latent fingerprints on a coffee mug using a protein stain. Adopted: May 2002 Revisions: 6 Last Revision: January 31, 2008 10-6
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PHYSICAL EVIDENCE MANUAL - Crime Scene Investigator Network

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