OREM, Utah — One student holed up in his house for two days after witnessing Charlie Kirk's assassination, nervous about going back to the Utah college campus where the conservative activist was shot. Another, unable to sleep or shake what she saw and heard, called her dad to come take her home.

Students who witnessed Wednesday's shooting at Utah Valley University are reckoning with trauma, grief and the pall the killing cast on their community.

Tyler James Robinson's arrest late Thursday calmed some fears. Still, questions persist about the alleged shooter's motive and planning, as well as security lapses that allowed a man with a rifle to shoot Kirk from a rooftop before fleeing.

The university said there will be increased security when classes resume Sept. 17.

In Robinson's hometown

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