The gunman who executed nine people at an Oregon community college before killing himself ranted in a manifesto he left behind about not having a girlfriend and said he thought everyone else was "crazy," a law enforcement official said Monday.
The official also said the mother of 26-year-old gunman Christopher Harper-Mercer has told investigators that he was struggling with some mental health issues. The official is familiar with the investigation but wasn’t authorized to speak because it is ongoing.
Harper-Mercer complained in the manifesto about not having a girlfriend and seemed to feel like he was very sane while others around him were crazy, the official said.
He wrote something to the effect of: "Other people think I’m crazy, but I’m not. I’m the sane one," the official said.
The manifesto was a couple of pages long.
Also Monday, students at the college embraced, held hands and cried as they returned to the campus for the first time since the shooting.
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