Neighbors in the small Utah community where authorities say Tyler Robinson lived described the 22-year-old suspect in the fatal shooting of conservative commentator Charlie Kirk as a "sweet," polite and otherwise "normal" young man, even as investigators said they were examining his online activity and recovered items for clues to a motive.

Robinson, who was arrested in connection with the Wednesday attack on Kirk at Utah Valley University, remains in custody as charging documents were expected Tuesday. Utah Attorney General Derek Brown told Fox News Digital that Robinson could face a combination of state and federal charges.

Neighbors and people who knew Robinson growing up in Washington County, a conservative area where about 75% of voters supported former President Donald Trump in the 2024 election, said they were stunned by the attack and by reports about the suspect’s recent political views. Ray Hardy, who said his children went to high school with Robinson, called him "normal," and other residents said he had been polite in brief interactions.

"This is not who we are," Hardy said. "This is not our society. It's not our community. It is not who we grew up with. I don't think this is the kid who grew up with us either. Something changed and affected him, almost infected him."

Gov. Spencer Cox said Sunday that Robinson had developed "a leftist ideology" despite being raised in a conservative household. Cox told reporters that friends and family had seen a shift in his politics in recent years and that investigators had found ammunition marked with anti-fascist messages and video-game references. The governor also said Robinson is not cooperating with authorities and has not confessed.

Cox urged scrutiny of Robinson’s digital footprint as part of the probe. He said friends and family reported that Robinson had been spending significant time online, including in gaming and obscure internet communities, and that investigators were examining that activity. The New York Times reported that Robinson messaged in a Discord chat hours after the shooting, joking that a "doppelgänger" was trying to get him in trouble.

Robinson spent most of his life in Washington County. Public records show his parents are registered Republicans, while Robinson is listed as unaffiliated and did not vote in the past two general elections. He was enrolled briefly at Utah State University in 2021 for less than one semester despite receiving a four-year merit scholarship, and he was a third-year student in an electrical apprenticeship program at Dixie Technical College in St. George, the Utah Board of Higher Education confirmed.

A family member told investigators that Robinson had attended a dinner in the days before the shooting where he discussed Kirk and criticized his viewpoints, Cox said. Authorities said they interviewed that relative as part of their probe. Attorney General Brown indicated investigators were pursuing both state and federal charges but did not offer additional specifics.

Local residents responded to the killing with vigils and outreach to both families. On Sunday, people gathered in Washington, Utah, to pray and to assemble care baskets for the families of both Kirk and Robinson. Several neighbors said they felt sympathy for Robinson’s parents and praised their cooperation with authorities during the investigation.

Vigil held in Washington County after the shooting

Members of the community said they were seeking answers about how a local young man allegedly became responsible for political violence. Diana, who helped organize prayer boxes for both families, said community members were trying to reconcile Robinson’s upbringing with the allegations.

"Not in a million years," she said when asked if she would have expected someone from their town to commit such an act. "He's just been brainwashed. He's listened to lies from different people, and it's easy to get mixed up."

Cox criticized social media platforms for the role he said they play in radicalizing young people, calling the algorithms "a cancer" during public remarks announcing Robinson’s arrest. He said items recovered at the scene and during the investigation suggested exposure to extremist online subcultures.

Cox also said one of Robinson’s roommates, who is transitioning from male to female, has been cooperating with investigators and had no prior knowledge of the attack. A family member quoted in local reporting described the roommate as hostile to conservatives and Christians, a claim the governor said he had heard during interviews but that investigators have not tied directly to the shooting.

Utah Valley University, where the shooting occurred, is roughly a four-hour drive from Washington County. Officials there and at local law enforcement agencies have declined to release detailed evidence publicly while the investigation continues.

The killing has prompted a range of responses nationally, including debate over political rhetoric and online radicalization. Local leaders emphasized community solidarity and pastoral support for victims’ families while awaiting the formal charges and the results of the continuing investigation.

Neighbors said they continue to grapple with shock as law enforcement prepares charging documents and examines Robinson’s recent activities. In the meantime, Washington County residents held fast to religious services and public gatherings aimed at grieving and seeking understanding.

Fox News Digital contributed reporting to this story.