WASHINGTON () Vice President JD Vance will transport the casket of slain conservative activist Charlie Kirk from Utah to Arizona aboard Air Force Two, according to sources.

Investigators on Thursday released two images of the person they believe shot Kirk.

The unidentified suspect is believed to have jumped off a roof and fled into a neighborhood after firing one shot, authorities said Thursday. A high-powered, bolt-action rifle they believe was used in the attack was recovered, and video recordings of the person they believe was responsible are being reviewed.

Kirk, 31, was a conservative political activist and media personality who co-founded Turning Point USA.

Originally from the Chicago suburbs, Kirk became a prominent conservative activist with a massive social media following. He was perhaps best known for viral videos of him debating college students on a range of political issues.

Kirk also hosted “The Charlie Kirk Show,” a conservative talk radio program, and served as a personal aide to Donald Trump Jr., the president’s eldest son.

President Donald Trump announced Kirk’s death on Truth Social, writing, “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!”

Trump said he planned to meet with Kirk’s family Thursday.

Kirk identified as a Christian and had a wife and two kids.

‘s Andrew Dorn contributed to this report.