Police at Sandy Hook Elementary School. (Wikimedia Commons)

According to NBC News, State's Attorney Stephen J. Sedensky III said in those few minutes on December 14 Lanza killed 20 children and six adults before taking his own life. 154 rounds were fired from a Bushmaster .223-model rifle, while the final round that Lanza used on himslef was fired from a Glock 10mm handgun. 

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A search of the house Lanza shared with his mother, whom the gunman also killed on the day of the Sandy Hook massacre, found a large arsenal of weapons. The Huffington Post reports guns, 1,400 rounds of ammunition, a bayonet and a collection of swords were found during the investigation. A shotgun was also found in Lanza's car. These weapons were all legally owned by Lanza's mother, Nancy. 

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The Connecticut medical examiner said Lanza had Asperger's Syndrome, according to CNN. The search of the killer's home found books on autism and Asperger's, which supports the medical examiner's claim. Asperger's is a high functioning form of autism, characterized by difficulties with social interaction and restricted and repetitive patters of interest and behavior. 

An unnamed source, reports Reuters, told police Lanza was a "shut-in" who liked to play the video game "Call of Duty" and rarely left home. 

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Police also found a smashed computer, a check made out to Lanza from his mother to purchase a gun, an NRA guide to pistol shooting, NRA certificates for both Lanza and his mother, articles about mass shootings and photographs of what appeared to be a dead body covered in plastic inside the home.

The NRA released a statement saying, "There is no record of a member relationship between Newtown Killer Adam Lanza, nor between Nancy Lanza, A. Lanza or N. Lanza with the National Rifle Associaion. Reporting to the contrary is reckless, false and defamatory."

Lanza's motive for the attack still remains unknown, and police say the ongoing investigation will not reach completion until June. 

Read more of Neon Tommy's coverage of Adam Lanza here. 

Read more of Neon Tommy's coverage of gun control here. 

Read the full documents here. 

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