Students and nearby residents are coping with shock and persistent anxiety after conservative activist Charlie Kirk was fatally shot while speaking at Utah Valley University on Sept. 10, an attack that left witnesses recounting trauma and prompted renewed scrutiny of campus security.

Kirk, 31, the co-founder of Turning Point USA, was struck by a single bullet as he addressed a crowd on the Orem campus. Police arrested 22-year-old Tyler James Robinson late Thursday in connection with the killing; investigators continued work over the weekend ahead of Robinson’s initial court appearance Tuesday. Authorities have said little about motive as they probe how a shooter allegedly armed with a rifle was able to fire from a rooftop and flee the scene.

The arrest brought temporary relief to some survivors but did not erase the emotional aftermath for many who say they witnessed the attack. One student who saw Kirk collapse stayed locked in his home for two days. Another called her father to take her home after she could not sleep or shake images of the shooting. Several students described recurring flashbacks triggered by loud noises and expressed reluctance to return to campus.

At a makeshift memorial near UVU’s main entrance, flowers and notes covered a space that for years had been a common gathering area for students. Cars circled nearby streets, horns blaring and flags displayed messages such as “We love you Charlie” and “RIP Charlie.” University staff began removing tents and banners and scrubbing graffiti and other reminders of the violence.

Students described the scene where Kirk was shot as a frequented gathering spot where they studied, socialized and relaxed, raising concern about encountering the site daily when classes resume. "Seeing it when I go back, I will be pretty uncomfortable at first, knowing I have to walk past it each time," student Alec Vera said.

Many who witnessed the attack recounted immediate physical reactions. Marjorie Holt, 18, said she lay in bed afterward unable to sleep, suffering from nausea and a pounding headache; she ultimately left campus with her father. Alexis Narciso, who was about 10 feet away, said he experiences numbness and flashbacks when he hears a bang or a car horn. Nearby resident Jessa Packard said footage from her home security camera captured a vehicle police say was driven to the campus by the suspect, and she described a lingering "weird heaviness" even after the arrest.

Investigators executed a search warrant at Robinson’s family home in Washington, Utah, about 240 miles southwest of Orem, and law enforcement activity was seen at locations linked to him, including an apartment complex in St. George. Authorities allege a gray Dodge Challenger driven to the campus was removed during the probe. Neighbors described Robinson as a shy, studious youngster from a close-knit family; one neighbor said the family had not been active in their local congregation for several years.

Police vehicles near an apartment complex connected to the suspect in the shooting of Charlie Kirk

University officials said campus security would be increased when classes resume on Sept. 17. They also said students would be allowed to retrieve personal belongings from areas that remained under investigation. Officers were seen allowing some students past police tape to retrieve bicycles and other items left behind in the chaos.

The killing has reverberated beyond Orem, intensifying calls for civility in political discourse while also prompting contentious public responses. Some people who criticized Kirk after his death faced consequences: Office Depot said it fired a worker in Michigan who refused to print flyers for a Kirk vigil and labeled them "propaganda." Separately, a conservative internet personality posted a video outside Illinois Gov. J.B. Pritzker’s home urging viewers to "take action" after the assassination; state officials said Pritzker’s security has been increased.

At UVU and nearby Brigham Young University, students gathered in quiet groups at the memorial and along campus walkways, with some describing disbelief and a sense of unreality. Halle Hanchett, 19, said she dropped to the ground in the fetal position when the shot rang out and has since been struggling with repetitive, intrusive memories of the event. "The memory, it just replays," she said.

Law enforcement has released few details about the investigation into whether Robinson acted alone or had a broader plan. Officials said they were continuing to dig into the suspect’s movements and communications as well as how he obtained a rifle and accessed the rooftop where authorities allege the shot was fired.

The attack and its aftermath have also prompted campus and community leaders to consider longer-term responses to politically charged events hosted at public universities. UVU officials have not said whether they will change policies on outside speakers, but they have emphasized stepped-up security for the near term and cooperation with federal investigators.

Students and community members leave flowers and flags at a memorial site near Utah Valley University

As investigators continue, students and neighbors said they were seeking ways to process grief and fear. Some described small acts of solidarity — quiet conversations, shared silence at the memorial, and parents picking up students who said they could not face campus. Neighbors of the suspect urged care in how the family is treated, saying they felt no ill will toward family members and describing the alleged shooter as someone who "made the wrong choice."

Authorities have urged anyone with information about the shooting to come forward as the probe advances into the suspect’s motives and preparations. For many students, the immediate challenge is returning to daily life while carrying what they saw and heard into the weeks ahead.