Police also found a 2008 New York Times article about a shooting at Northern Illinois University.

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An art history minor at Northern Illinois University, Gupta wrote his senior thesis on owning an art gallery.

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After the shooting at Northern Illinois University last week, students on campuses across the country are wondering whether they are safe.

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Clancy advises students to try to work with a school that has a partnership with Cisco, like Northern Illinois University or College of DuPage.

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After the shootings at Virginia Tech in 2007, in which 33 people died, and at Northern Illinois University, where 6 were killed in 2008, debates on campus gun policies in state legislatures soared.

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The authors, Mitchell Conover of the University of Richmond, Gerald Jensen of Northern Illinois University, Robert Johnson of the CFA Institute and Jeffrey Mercer of Texas Tech University, studied data from December 1970 through August 2007.

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The haul from the suspect's home included books two books on mental health "Look Me in the Eye: My Life with Asperger's" and "Born on a Blue Day: Inside the Mind of Autistic Savant" and a pistol-shooting guidebook published by the NRA. Investigators also found a New York Times article published Feb. 18, 2008, on a school shooting at Northern Illinois University.

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