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.com can report.

The manhunt for the assassin is growing in size, as officials have finally released photos of the person they are looking for. Article continues below advertisement

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Kirk's killer was reportedly perched on the roof of the multi-story Losee Center Building on the campus, some 200 yards from where the influencer was addressing and debating a crowd of nearly 3,000.

The sniper fired a single shot from what was later recovered to be a high-powered rifle , striking the 31-year-old. He died not long after at a l

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