Crime scene investigation is the meeting point of science, logic and law. Processing a crime scene is a long, tedious process that involves purposeful documentation of the conditions at the scene and the collection of any physical evidence that could possibly illuminate what happened and point to who did it. There is no typical crime scene, there is no typical body of evidence and there is no t...

This comparative analysis examines the suitability of commonly applied local cluster detection algorithms. The spatial distribution of an observed spatial crime pattern for Houston, TX, for August 2005 is examined by three different cluster detection methods, including the Geographical Analysis Machine, the Besag and Newell statistic, and Kulldorff’s spatial scan statistic. The results suggest ...

Verifying the integrity of digital images and detecting the traces of tampering without using any protecting pre–extracted or pre–embedded information has an important role in image forensics and crime detection. When altering a JPEG image, typically it is loaded into a photo–editing software and after manipulations are carried out, the image is re–saved. This operation, typically, brings into ...

Recently, a novel ninhydrin reaction with cyanide has opened new ways to detect this poison in the body fluids and the environmental samples. Mainly, detection of cyanide with ninhydrin at a crime scene could be of prime interest for forensic investigators. Besides, the reaction conditions are very common, except the need to avoid oxygen and oxidizers. The ninhydrin-based assay proved to be hig...