Evidence hints at deadlier plan in Conn. school massacre
Connecticut School Shooting
Mourners grieve at one of the makeshift memorials for the victims of the Sandy Hook elementary school shooting, Sunday, Dec. 16, 2012 in Newtown, Conn. On Friday, a gunman allegedly killed his mother at their home and then opened fire inside the Sandy Hook Elementary School, killing 26 people, including 20 children. (AP Photo/Mary Altaffer)