Read more : Oregon mall shooting victims remembered . NEW : The central image on Roberts ' Facebook page was a work by graffiti artist Banksy . The gunman 's mother died at childbirth ; he never met her , a friend said . He told a friend he left his aunt 's home at age 14 and raised himself . Jacob ' Jake ' Roberts provides edgy , dark humor on his Facebook page .
NEW : The central image on Roberts ' Facebook page was a work by graffiti artist Banksy . The gunman 's mother died at childbirth ; he never met her , a friend said . He told a friend he left his aunt 's home at age 14 and raised himself . Jacob ' Jake ' Roberts provides edgy , dark humor on his Facebook page .