WATERLOO — Jurors heard about the practice of gunshot residue testing as the retrial continued in the 2013 shooting death of a Waterloo teen. Perquondis Holmes, 25, is charged with first-degree murder ...

Gunshot residue is important for helping forensic investigators reconstruct crime scenes where a firearm was used and link suspects to the event. However, current detection methods are costly, ...

The Missouri State Highway Patrol crime lab, which performed the analysis on the evidence collected from Lisa Barlow's hands, typically analyzes about 20 to 30 gunshot residue tests each month. The ...

Igor Lednev, a chemist at the University at Albany, is pioneering a new laser-based technology to enhance forensic investigations involving gunshot residue. His research, which combines Raman ...

ST. LOUIS -- Gunshot residue was on the hand, waistband and shirt of an 18-year-old man killed by a St. Louis police officer, authorities said Tuesday. Police union leaders said the lab test by the ...

State police expert says either person could have fired shot that killed Carli Dennis. WILKES-BARRE – When the trigger was pulled on the pistol that sent a fatal bullet into Carli Dennis’ head, a ...