The small town of Newtown, Conn., was rocked last Friday morning when 20-year-old Adam Lanza broke into Sandy Hook Elementary School and opened fire, killing 20 students and six staff members, along with his mother and, finally, himself.
At around 9:30 a.m., Lanza approached the school building and, unable to open the locked doors, shot his way through a window near the front office to gain entry to the school. He carried three weapons and multiple rounds of ammunition.
Lanza had a confrontation with workers at the office, where Principal Dawn Hochsprung was shot. School psychologist Mary Sherlach was also shot near the office.
Lanza then proceeded down the front corridor of the school building.
Lanza stopped first in kindergarten teacher Kaitlin Roig's classroom. Roig had hidden her students into a small bathroom in the building and told them to remain silent.

Lanza, seeing an empty room, moved on to an adjacent classroom, where he killed substitute teacher Lauren Rousseau and all of her students except one, who survived.

When he heard police coming toward him, Lanza shot and killed himself using a handgun in a classroom in the front hallway.
Lanza also shot his mother in the face multiple times, killing her, at her home in Newtown that morning, before leaving for Sandy Hook Elementary School.
Lanza's mother, Nancy Lanza, 52, owned the guns that Adam Lanza used in the attack.
Lanza carried with him three guns, including a 9mm Sig Sauer and 10mm Glock. But most of his victims were shot multiple times using a Bushmaster .223 semiautomatic rifle.