The gunman who killed 20 children and six adults at a Connecticut elementary school fired 154 rounds in less than 5 minutes, selecting high capacity magazines from a home arsenal stocked with swords, knives and a cache of guns, officials said.
Investigators also found a newspaper clipping about a mass shooting in the home that Adam Lanza shared with his mother, along with a gun safe in his bedroom, receipts from shooting ranges and National Rifle Association certificates for both of them, according to court papers released on Thursday.
To carry out the second deadliest school shooting in U.S. history, the 20-year-old Lanza used 30-round magazines at Sandy Hook Elementary School in Newtown, said Connecticut Governor Dannel Malloy after the previously sealed searches of Lanza’s car and home were made public.
“We now know that he left the lower capacity magazines at home,” Malloy said in a statement. “This is exactly why we need to ban high capacity magazines and why we need to tighten our assault weapons ban.”
One of the children killed in the spree was Noah Pozner, 6, whose family is Jewish.
The pale yellow two-story suburban colonial house where Lanza lived is directly across the street from the home of Dylan Hockley, 6, who died in his teacher’s arms in the massacre. The Hockley family has since moved to another part of town.
The searches showed that Lanza had many weapons besides the AR-15-type assault rifle and two handguns used in the Dec. 14 attack.
The rampage started at the family home, where authorities say he shot dead his mother, Nancy Lanza, and then drove to the school he once attended. There he killed the 20 children, six staff members and then himself.
In addition to the cache of guns, three samurai-style swords and boxes of bullets, police found items that could offer some clues on Adam Lanza’s thinking.
Among them were a 2008 New York Times clipping on an Illinois school shooting and books on Asperger’s syndrome and autism. Friends of the Lanza family had described Adam Lanza as having Asperger’s syndrome, which is a form of autism.
For some in the tight-knit southern New England town, the release of the new details only inflamed emotional wounds.
“We struggle every day to stay on the path of recovery and every bit of information that becomes part of the public discourse holds a potential hurt for a family who has already suffered immeasurable harm,” said Newtown First Selectman E. Patricia Llodra.
“I appreciate that full and accurate information may help us, as a society, learn how to predict and prevent such horrors from happening in the future. That gain, however speculative, must be balanced against the hurt experienced by those in the eye of the storm,” Llodra said.