New footage of 'person of interest' fleeing from rooftop moments after Charlie Kirk assassination as FBI issues update on manhunt

New footage has shown the alleged shooter who killed Charlie Kirk on 10 September, as he was debating with students in Utah.

The 31-year-old was fatally shot at Utah Valley University's campus, where he was delivering a Q&A debate during his ‘Prove Me Wrong’ rally.

It was just moments after being asked a question from student, Hunter Kozak, that the Turning Point USA founder was shot by the gunman, who fired a single bullet through his neck.

Kirk could be seen recoiling in his chair and falling to the ground, with the horrifying video being shared on social media.

His death was later confirmed by Donald Trump, who was an ally of Kirk’s.

He wrote 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.”

Charlie Kirk was murdered as he was having a debate in Utah (JOSH EDELSON/AFP via Getty Images)

The images, which were released within hours of him being shot, shows a man walking up a staircase, wearing sunglasses, cap and a black long-sleeved t-shirt.

The video was shared by the Bureau and the Utah Department of Public Safety during a press conference yesterday evening (11 September).

It shows the person, wearing all black, running across the roof of a building on campus, before stopping near the edge and then scaling down and walking through a parking lot and towards a wooded area.

Mason claimed the man 'blended in well with the college institution', and that they have 'many details right now', including that the suspect appeared to be of 'college age'.

Beau Mason, the commissioner of the Utah Department of Public Safety, said in a press update: "We were able to track the movements of the shooter starting at 11:52 am. This subject arrived on campus shortly away from campus.

"We have tracked his movements onto the campus through the stairwells, up to the roof, across the roof, to a shooting location."

Mason added: "After the shooting, we were able to track his movements as he moved to the other side of the building, jumped off of the building and fled, off of the campus and into a neighbourhood."

While he said they were reluctant to release all they had, FBI agent Robert Bohls also confirmed they found the gun they believe killed Kirk.

He said: "I can tell you that we have recovered what we believe is the weapon to be that was used in yesterday's shooting is a high powered bolt action rifle.

The FBI has released an update on the case (Francisco Kjolseth/The Salt Lake Tribune/Getty Images)

"That rifle was was recovered in a wooded area where the shooter had fled. The FBI laboratory will be analysing this weapon."

Authorities also noted that the man left palm impressions, shoe impressions and a forearm imprint, which could be used to collect DNA.

However, they are still relying on public tips, and are offering a $100,000 reward.

The FBI has received 7,000 tips so far.