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Photo by: Barbara Frey

Adam Lanza — shown in a 2005 photo provided by neighbor Barbara Frey and verified by Richard Novia, the Newtown, Conn., school district's former head of security — has been identified by authorities as the gunman who killed his mother at their home and then opened fire on Friday, Dec. 14, 2012, inside an elementary school before killing himself. (AP Photo/Barbara Frey)

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