The father of the Newtown, Conn., school shooter said he wishes his son had never been born. In an interview with The New Yorker, Peter Lanza said of his son Adam, 20, who killed his mother, Nancy, before killing 20 pupils, six staff members and himself at Sandy Hook Elementary School in December 2012: "You can't get any more evil. How much do I beat up on myself about the fact that he's my son? A lot." Lanza had been divorced from Adam's mother since 2009 and hadn't seen his son for more than two years at the time of the killings. New Yorker writer Andrew Solomon said on "Today" that Peter Lanza and his ex-wife Nancy never suspected their son was dangerous. Peter Lanza described his son as the “safest, most cautious, most rule-following person I ever met,” Solomon said. Lanza spoke up because he felt a “moral obligation” after meeting with victims’ families.