![Lanza obsessively edited mass shooting Wikis, sought info on turning semiautomatic guns into fully capable killing machines before Newtown massacre Lanza obsessively edited mass shooting Wikis, sought info on turning semiautomatic guns into fully capable killing machines before Newtown massacre](https://nypost.com/wp-content/uploads/sites/2/2013/08/schoolshootingtransparency101209-525x525.jpg?quality=75&strip=all&w=496)
Lanza obsessively edited mass shooting Wikis, sought info on turning semiautomatic guns into fully capable killing machines before Newtown massacre
![Childhood documents reveal Sandy Hook shooter Adam Lanza's school misery and anorexia | Daily Mail Online Childhood documents reveal Sandy Hook shooter Adam Lanza's school misery and anorexia | Daily Mail Online](https://i.dailymail.co.uk/1s/2019/01/23/23/8909590-0-image-a-11_1548284591590.jpg)
Childhood documents reveal Sandy Hook shooter Adam Lanza's school misery and anorexia | Daily Mail Online
![NEWTOWN: Exclusive book excerpts detail killer Adam Lanza's descent into madness and murder – New York Daily News NEWTOWN: Exclusive book excerpts detail killer Adam Lanza's descent into madness and murder – New York Daily News](https://www.nydailynews.com/wp-content/uploads/migration/2013/12/01/7DDUNOHAWI5XKRSMVCNNTDQPPM.jpg)
NEWTOWN: Exclusive book excerpts detail killer Adam Lanza's descent into madness and murder – New York Daily News
![Revealed: Sandy Hook gunman Adam Lanza was obsessed with correcting Wikipedia articles about mass killers and admitted having a bullet 'fetish' | Daily Mail Online Revealed: Sandy Hook gunman Adam Lanza was obsessed with correcting Wikipedia articles about mass killers and admitted having a bullet 'fetish' | Daily Mail Online](https://i.dailymail.co.uk/i/pix/scaled/2013/07/01/article-2352249-0292DBF600000514-571_308x185.jpg)