Charlie Kirk, a conservative activist and close ally of President Donald Trump who played an influential role in rallying young Republican voters, was shot and killed Wednesday at a Utah college event in what the governor called a political assassination carried out from a rooftop. A person of interest was in custody, officials said.

Conservative activist and Turning Point USA co-founder Charlie Kirk died Wednesday after he was shot at an event at Utah Valley University. He was 31 years old.

There was conflicting information about the investigation. Utah Gov. Spencer Cox said at a news conference, “we have a person of interest in custody,” while Utah Department of Public Safety Commissioner Beau Mason said the suspect is still at large.

FBI Director Kash Patel later said a “subject in custody” was released after being interrogated.

Utah Valley University police said they were going “building to building” to evacuate people.

President Trump posted on Truth Social: “The Great, and even Legendary, Charlie Kirk, is dead. No one understood or had the Heart of the Youth in the United States of America better than Charlie. He was loved and admired by ALL, especially me, and now, he is no longer with us. Melania and my Sympathies go out to his beautiful wife Erika, and family. Charlie, we love you!”

Kirk was participating in an event at the Orem, Utah, school as part of his organization’s “The American Comeback Tour” when he was attacked.