Newly released FBI documents in the 2012 Sandy Hook Elementary School shooting paint an even more disturbing portrait of killer Adam Lanza, suggesting his fascination with children verged on the obscene. Connecticut investigators found a file on Lanza’s computer “advocating pedophiles’ rights and the liberation of children,” a recently unsealed document says. They also reportedly found a screenplay about a relationship between an adult male and a young boy. There’s no evidence Lanza, 20, acted on sexual interests in young children before the school massacre, which killed 20 elementary school children and six adults before Lanza killed himself.