OREM, Utah — The shooter who killed conservative activist Charlie Kirk and vanished off a roof into the woods remained at large more than 24 hours later Thursday afternoon as federal investigators appealed for the public's help by releasing a pair of photos of the person believed responsible.

Investigators obtained clues including a palm print, a shoe impression and a high-powered hunting rifle found in a wooded area along the path down which the shooter fled.

They had yet to name a suspect or cite a motive in the killing they were treating as an assassination, the latest act of political violence to convulse the United States across the ideological spectrum.

This undated combination of images shows a person of interest in connection with the fatal shooting of Charlie Kirk at Utah Valle

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