Video shows how Charlie Kirk assassination suspect escaped

The footage shows the suspect running across a roof before jumping off a building onto the lawn below and fleeing across the road.

Utah Governor Spencer Cox said authorities were sharing the footage and images of the suspect to “get as much attention as possible so that we can get help from the public in tracking down this evil human being”.

Shoe impressions, a forearm imprint and a palm print were collected from the rooftop, authorities said.

The FBI also issued new photos of a person of interest and announced a reward of up to US$100,000 (about NZ$167,000) for information leading to his identification and arrest.

US President Donald Trump vowed Kirk’s killer would receive the “appropriate” punishment.

“They’re making big progress,” he said of the manhunt.

Trump said he had been given an indication of the killer’s motivation but did not share further details.

“He’s an animal, total animal, and hopefully they’ll have him, and they’ll get him.

“What he did is disgraceful.

“Charlie Kirk was a great person, a great man, great in every way, especially with youth. And what he did, what this man did, was disgraceful. So hopefully we’ll have him, and we will deal with him very appropriately.”