Page 7 - Forensic News Journal Oct Nov 2017
P. 7

Physical Evidence

        between the victim and               command more than a                  tern to objects at the scene
        spatter pattern.  Another            cursory search, including            is a good place to start.
        example is the overall               searching multiple loca-             Never discount simple

        condition of the crime               tions.  Notes from these             objects as murder weap-
 F      scene.  An organized ver-            decisions are invaluable in  ons, especially when blunt

 O      sus disorganized crime               court when explaining in-            force trauma is suspected.
 R      scene may be the inves-              vestigative roadmaps.  No  Although perpetrators

 E      tigator’s first clue to the          trier of fact wants to make  usually remove imple-
 N      perpetrator’s modus ope-             a ruling based on some-              ments or weapons used at
 S      randi (mode of operation). one’s “gut feelings.”                          the crime scene, it is not

 I                                                                                uncommon for them to be
 C      Utterances of “What was              Another type of physi-               found nearby.
        this person thinking?” can  cal evidence is transfer

 M      often be heard while in-             evidence. It can be found            Lastly, the value of physi-
 E      vestigating a crime scene.   on floors, walls, furniture,  cal evidence may include

 T      Getting inside the crimi-            people, objects, and ceil-           more than its tangible
 H      nal’s mind is impossible.            ings.  Rarely is the source  properties.  The location

 O      However, by compar-                  of the transfer found next           of the evidence may illu-
 D      ing similar crime scenes             to the evidence left be-             minate patterns of suspect
 O      analogical evidence, one             hind.  However, quick                movement or the location

 L      can provide insight into             analytical thinking will             from which a weapon was
 O      suspect-crime scene link-            narrow your options.  De-            used.  The functionality of

 G      ages.  What-if scenarios             pending on the type of               certain items should also
 Y      may also stimulate dif-              transfer, how likely is the          be carefully documented.
        ferent investigative per-            source still at the crime            For example, were lights

        spectives, followed by               scene?  For example,                 on or off?  Were some
        retrieval of mental schema  strangulation may occur                       windows open or closed,
        (frameworks), enabling               via manual strangulation             locked or unlocked?  Were

        the creation of multiple             or with an implement,                recent messages left on a
        crime scenarios. It is dur-          such as a rope or a bungee  smartphone?  Gathering

        ing these times that non-            cord.  Perhaps, the perpe-           information about the vic-
        traditional search methods  trator used a seemingly                       tim’s activities and rou-
        may be deployed.  For                innocuous item in hopes              tines may provide clues to

        example, the presence of             of it not being linkable.            establishing the time the
        presumptive evidence may  Comparing the wound pat- crime was committed.  A



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