Adam Lanza planned his Sandy Hook massacre in meticulous detail on a chilling 7ft long spreadsheet that police believe was used to keep score of killings, it was revealed today.
Connecticut State Police found the 4ft wide document in Lanza’s harddrive that was so big it required a special printer after the December 14 attack that left 26 people dead.
It contained Lanza’s obsessive research – in nine-point font – about mass murders of the past, and even attempted murders.
Among the tragedies Lanza studied were the 2006 mass shooting carried out by Charles Carl Robert IV in which he killed five Amish school girls as well as the 2011 massacre of 77 people in Norway by Anders Behring Breivik.
Investigators revealed they have found reams of articles about multiple shootings, leading them to speculate he intended to outdo them all.