So far, investigators haven't found any evidence on social media or other writings by Crooks that might help identify his motive for the attempted assassination, law enforcement officials say.
But CNN interviews with more than a half-dozen former classmates and neighbors of Crooks painted him as quiet, with classmates remembering him as a good student and something of a misfit in high school.
Jason Kohler, 21, who went to the same high school, told CNN that Crooks was bullied by other students and seemed to be a loner.
Crooks had "no facial expression" when he walked through the school hallways, Kohler said. "He wasn't, like, with the clique, so he always had, I guess, a target on his back."
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Another former student at the school, Sarah D'Angelo, remembered Crooks as "a quiet kid, not obviously political or violent in any way." She said the only time he spoke with her was when their class was waiting for their graduation ceremony to start.
A third classmate, who asked not to be named, said that Crooks was very smart, took honors classes, and was shy.
She said that he had a group of friends who were fairly conservative, some of whom would wear Trump hats.
"There was definitely chatter about him just looking a little different," the classmate said of Crooks.
"Almost a retro nerd vibe."
more at the link including some co-workers