Sandy Hook Elementary School shooting

Sandy Hook Elementary School shooting, mass shooting in Newtown, Connecticut, on December 14, 2012, that left 26 people dead and 2 injured at the school. After murdering his mother at their home, Adam Lanza fatally shot 20 children and 6 adults at Sandy Hook Elementary School before taking his own life. It was one of the deadliest school shootings in U.S. history.

The murder of Adam Lanza’s mother

The attack began when 20-year-old Adam Lanza killed his mother, Nancy Lanza, in the home that the two shared in Newtown. She was shot four times with a .22-calibre rifle. She had purchased the rifle, as well as an AR-15—the civilian semiautomatic version of the military M16 assault rifle—and several other firearms that Adam Lanza would use later that day, in the years prior to the shooting. Before leaving the house, Lanza destroyed his computer’s hard drive, an act that would make evidence gathering difficult for law enforcement personnel.

The shootings at Sandy Hook

Adam Lanza gathered the AR-15, two semiautomatic pistols, and a shotgun, as well as several hundred rounds of ammunition stored in high-capacity magazines, and drove his mother’s car to Sandy Hook Elementary School, a public school in Newtown for kindergarten through fourth grade. Leaving the shotgun in the car, Lanza shot his way through a window next to the school’s locked security door just after 9:30 am. He was immediately confronted by Sandy Hook principal Dawn Hochsprung and school psychologist Mary Sherlach. Lanza shot and killed both women, but the encounter and the sounds of gunfire were broadcast to individual classrooms via the school’s public address system. In accordance with previously established lockdown protocols, teachers immediately took steps to attempt to safeguard their students, concealing them in closets or bathrooms and barricading doors with furniture or with their own bodies.

Lanza entered the classroom of teacher Lauren Rousseau and killed her and 14 children. He then went to a second classroom, where first-grade teacher Victoria Soto had hidden her students in a closet. She attempted to misdirect Lanza by telling him that her class was in the school’s auditorium on the other side of the building. Lanza killed Soto, as well as six students who attempted to flee from their hiding place. Also killed in the shooting were Anne Marie Murphy, a special education aide, and behavioral therapist Rachel D’Avino; two other Sandy Hook staff members were injured. Lanza fired 154 rounds in less than five minutes, claiming 26 lives.

The first emergency call from the school was received at about 9:35 am, and law enforcement personnel responded within minutes. The first officers to enter the building caught a glimpse of an individual dressed in dark clothing, and, after hearing a series of shots, they found Lanza near the door to Soto’s classroom, dead from a self-inflicted gunshot wound. As the scale of the attack became clear, dozens of state and local police officers descended on the school, which police officials said would remain closed as a crime scene “indefinitely.” The school would be demolished in 2014 and replaced by a new building—occupying the same site but with a different footprint—in 2016. Investigators determined that Lanza had used the AR-15 as his primary weapon throughout the attack, though he had taken his own life with a handgun.