Unconfirmed reports from NBC on Sunday suggest that Adam Lanza, the 20-year-old shooter who killed 20 first graders and 6 adults on Friday before turning a gun on himself, may have had contact with Sandy Hook Elementary staff the day before the shooting.
One potential motive provided by officials to NBC News, was that Adam Lanza went to Sandy Hook Elementary on Dec. 13, the day before he wreaked carnage on the school in the second largest mass shooting in U.S. history. The officials said that Lanza got into “some type of altercation”, although they wouldn’t go into specific details about the shooter and staff’s contact.
Lanza reportedly got into this altercation with four staff members. Three of those staff members involved in the argument were shot and killed by Lanza on Friday. The fourth staff member was not at the school that day. Investigators say they are interviewing the fourth person who had contact with Lanza right before the shootings, to gather more information about a possible motive.
Other clues to possible motives were found at the home of Adam and his mother Nancy Lanza. Police say they have gathered several revealing clues. Lanza’s computer was smashed, in a way that suggests he was trying to destroy evidence, however, police believe computer forensics can still gather information from the motherboard.