Flowers, candles and stuffed animals at a makeshift memorial in Newtown, Conn., the week after 20 children and 6 adults were killed at Sandy Hook Elementary School. Eric Thayer/Reuters/Landov hide caption

itoggle caption Eric Thayer/Reuters/Landov

An image from a Connecticut State Police report on the shootings at Sandy Hook Elementary School shows a scene at 36 Yogananda St. in Newtown, Conn., where Adam Lanza killed his mother before driving to the school and killing 26 students and staff last December. AP hide caption

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Dec. 18, 2012: Crime scene tape stretches across the property outside the home where Adam Lanza lived with his mother, Nancy Lanza. Inside, police found weapons and other evidence. Lucas Jackson /Reuters /Landov hide caption

itoggle caption Lucas Jackson /Reuters /Landov

Remembering the victims: Earlier this month, two mourners paused at a makeshift memorial in Newtown, Conn., for the children and adults killed at Sandy Hook Elementary School. Zhang Chuanshi /Xinhua /Landov hide caption

itoggle caption Zhang Chuanshi /Xinhua /Landov

Candles with the names of victims of the Sandy Hook Elementary School shooting, at a makeshift memorial near the entrance to the grounds of Sandy Hook Elementary School. Brendan Smialowski /AFP/Getty Images hide caption

itoggle caption Brendan Smialowski /AFP/Getty Images

Nancy J. Lanza, mother of suspected mass shooter Adam Lanza, was one of the 26 victims of the mass shooting on Friday. Handout/Courtesy of family of Nancy Lanza via Getty Images hide caption

itoggle caption Handout/Courtesy of family of Nancy Lanza via Getty Images