he German-Iranian killer had no known links to the Islamic State or any other terrorist group, but had a sick fascination with mass killings, investigators found.
Police raided the man’s home overnight and found a stash of literature about why young perpetrators carry out school shootings in the U.S., titled “Why Kids Kill: Inside the Minds of School Shooters.”
The book, by American psychologist Dr. Peter Langman, studies the gunmen who carried out shootings at Columbine and Virginia Tech, among others. A German translation of it was found in Sonboly’s bedroom, the Guardian reported.
Initial investigations suggest the Munich-born suspect had suffered from psychological problems like depression and received treatment, but details were still being confirmed, said Munich prosecutor Thomas Steinkraus-Koch.
According to social media reports by New York Times journalist Rukmini Callimachi, Sonboly had been “severely bullied” at school and once threated to “go on a shooting rampage,” after a dispute with a classmate, a 14-year-old neighbor who attended the same high school as the gunman said.
Another neighbor of the gunman described him as “very quiet.”
He was such a quiet boy! With a known desire to kill a bunch of people.
