Source: CBS News
In the months before the shootings at Sandy Hook Elementary School, gunman Adam Lanza compiled extensive research on other mass shootings: Graphic details about the killers, their weapons and victims.
Sources say Lanza tracked the death tolls of other attacks and viewed them in terms of “scores.” Investigators believe Lanza was trying to achieve a higher score than other mass killers when he attacked the nearby school, killing 20 first graders and six school staff members last December.
Investigators suspect Lanza viewed the school as an easy target filled with people.
As CBS News first reported last month, Lanza was particularly obsessed with Anders Breivik, a Norweigian man who killed 77 people in July 2011. Breivik killed eight with a bombing in downtown Oslo, then fatally shot 69 people, mostly teenagers, at a summer camp on a nearby island.
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