1 of Guns at Slaying Site Can’t Be Traced

One of the four guns found at the suburban Boston Internet consulting firm where seven employees were killed could not be traced and may be a Spanish relic, law enforcement officials said. A spokesman for the U.S. Bureau of Alcohol, Tobacco and Firearms, John D’Angelo, said the agency had completed its inquiry into the traces of three of the four weapons found at the site of Tuesday’s deadly shootings. “They were unable to trace one gun because of its age,” D’Angelo said. The weapon was found in the pants pocket of Michael McDermott, who is accused of gunning down four female and three male co-workers at Edgewater Technology Inc. in Wakefield, Mass.