What happened?
Some time before 9:30 a.m. EST on Friday December 14, 2012, Lanza shot and killed his mother Nancy Lanza, aged 52, at their Newtown home with a .22-caliber Savage MK II-F bolt action rifle. Investigators later found her body clad in pajamas, in her bed, with four gunshot wounds to her head. Lanza then drove to Sandy Hook Elementary School. Shortly after 9:35 am, using his mother's Bushmaster XM15-E2S rifle,[29, Lanza shot his way through a glass panel next to the locked front entrance doors of the school. The police heard the final shot at 9:40:03 a.m; they believe that it was Lanza shooting himself in the lower rear portion of his head with the Glock 20SF in classroom 10. The students among the victims totaled eight boys and twelve girls, all between six and seven years of age, and the six adults were all women who worked at the school.