Photoluminescent lead detection in gunshot residue. (A) Shooting firearms produces gunshot residue that typically contains lead particulates. (B) Methyl ammonium bromide in the reagent reacts with ...

A recent Oregon Court of Appeals ruling blew a gaping hole in the state police crime lab’s long-standing technique of matching a suspect’s gun to shell casings left behind at a crime scene. The court ...

WHAT DID HE HAVE TO SAY? WELL, JESSICA, THAT WITNESS WAS ON THE STAND FOR TWO HOURS TALKING ABOUT THE STEPS THAT WERE TAKEN TO SEARCH THROUGH THE SNOW FOR THAT EVIDENCE. NOW, THE WITNESSES, LIEUTENANT ...

Crime-scene models with detailed measurements once took hours to collect. Now, law-enforcement agencies are increasingly turning to new technology to help speed up the work and better collect evidence ...