Federal and state investigators are appealing for the public's help in finding the person who assasinated conservative activist Charlie Kirk.

The FBI branch of Salt Lake City has released surveillance images of a new person of interest in the shooting of conservative activist Charlie Kirk on the Utah Valley University campus Wednesday afternoon.

FBI insiders say Charlie Kirk's alleged gunman knew what he was doing when he shot and killed the conservative activist from the roof of a tall building on the campus of Utah Valley University, RadarOnline.

The shooter, who fired a single shot from a distant roof, remained at large and unidentified on Thursday nearly 24 hours into the investigation.