Add Yahoo as a preferred source to see more of our stories on Google. The origin of the 9mm pistol that Claudio Neves Valente fired in a Brown University lecture hall is not known to the public. But ...

Every day, thousands of people use indoor gun ranges that are designed to limit the hazards of target shooting, including lead exposure and stray bullets. But shooting indoors poses another hazard ...

Investigators have traced the two 9mm pistols they say were used by Claudio Neves Valente in the shooting at Brown University and the murder of a MIT professor in December. A completed trace ...