Shooting suspect Tyler Robinson appeared to be a social teenager who was passionate about math in high school, his yearbook revealed.
Robinson, 22, was arrested on suspicion of assassinating Charlie Kirk, 31, at Utah Valley University on Wednesday.
Robinson was apprehended following a 33-hour manhunt after he was persuaded to turn himself in by his father.
Years before being named as the alleged shooter, Robinson was a student at Pine View High School in St George, Utah, where he was a member of the auto mechanics club.
In a section where students were asked for their favorite subject, he wrote: 'Math, it makes more sense than English.'
