At his official van Hispanic police officer uses a scent transfer unit to examine a knife at a crime scene.


In his official van in Santa Ana, CA, a Hispanic police officer uses a scent transfer unit to examine a knife at a crime scene. The unit can collect human skin cells or "scurf" for evidence. Note face mask and gloves to avoid contaminating evidence.


Size: 2911px × 4367px
Location: Santa Ana, California USA
Photo credit: © Marmaduke St. John / Alamy / Afripics
License: Licensed
Model Released: No

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