>> reporter: an online dating profile traced to the gunman listed his religious profile as "doesn't like organized religion." he describes himself as not religious but spiritual. anna sp anna shot in the back, shot in the spine, survived by playing dead. she saw the gunman leave something behind. >> she said he gave somebody a box, gave somebody a box, somebody who lived. >> i don't know -- >> said, you got to deliver this. >> reporter: investigators tell cnn the gunman also left behind writings representing past mass shootings, frustration with not having a girlfriend, and racial anger toward blacks. the family told investigators he suffered from mental health issues. >> i've seen this on the news before. i've seen other people we'll do this -- people deal with this. i felt horrible for them. it's something that happened to other people. now's happened to me and my son and my family.