A Massachusetts teenager who was arrested for allegedly expressing a desire to commit a school shooting was allowed by a judge to post bail and go home. The post Teen sat in his room with 3D printer ...

Police now sound confident that the handgun and suppressor found in possession of Luigi Mangione, the suspect charged with the fatal shooting of UnitedHealthcare CEO Brian Thompson, were fabricated ...

Luigi Mangione, who has been charged with murder in the shooting death of UnitedHealthcare CEO Brian Thompson, apparently had a ghost gun, a type of firearm that can be made at home, police said ...

For decades, America's detectives have made breakthroughs in crime using gun traces. A homicide investigator typically uses ballistics and serial numbers of weapons checked via a vast network of gun ...

The same 3D printers that can generate car parts and jewelry are also being used to create small plastic blocks that transform pistols into machine guns, federal prosecutors in Texas warned Monday as ...