Classes at Purdue University were interrupted by the sounds of gunfire, fire alarms and screams when a student entered a basement classroom and fatally shot a fellow senior engineering student whom a former teacher described as "phenomenal." Police said they haven't determined why Cody Cousins, 23, shot Andrew Boldt, a 21-year-old teaching assistant from West Bend, Wis., inside the school's Electrical Engineering Building about noon Tuesday. Purdue Police Chief John Cox said witnesses believed the shooting was "an intentional act" but said there was no immediate indication that Cousins and Boldt had past troubles. No one else was injured, and Cousins is being held at the Tippecanoe County Jail on a preliminary charge of murder. Read more at http://www.philly.com/philly/news/n...4abca42d9a01282e78ca.html#1uDVigJsEOqzoC5i.99