<p>Law enforcement sources at the scene tell CNN a shooter was positioned on a building rooftop just outside the venue where former President Donald Trump was holding his rally in Butler, Pennsylvania.</p>
Video appears to show suspected Trump shooter on a roof

Law enforcement sources at the scene tell CNN a shooter was positioned on a building rooftop just outside the venue where former President Donald Trump was holding his rally in Butler, Pennsylvania.

00:36 - Source: CNN
Shooting at Trump Rally 15 videos
<p>Law enforcement sources at the scene tell CNN a shooter was positioned on a building rooftop just outside the venue where former President Donald Trump was holding his rally in Butler, Pennsylvania.</p>
Video appears to show suspected Trump shooter on a roof
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Republican presidential candidate and former U.S. President Donald Trump reacts as multiple shots rang out during a campaign rally at the Butler Farm Show in Butler, Pennsylvania, U.S., July 13, 2024. REUTERS/Brendan McDermid
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BUTLER, PENNSYLVANIA - JULY 13: Republican presidential candidate former President Donald Trump is rushed offstage by U.S. Secret Service agents after being grazed by a bullet during a rally on July 13, 2024 in Butler, Pennsylvania. (Photo by Anna Moneymaker/Getty Images)
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<p>CNN's Evan Perez breaks down new video showing the chaotic moments that unfolded as a gunman opened fire at former President Donald Trump's rally in Pennsylvania.</p>
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Republican presidential candidate former President Donald Trump is surrounded by U.S. Secret Service agents at a campaign rally, Saturday, July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci)
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Republican presidential candidate former President Donald Trump is helped off the stage at a campaign event in Butler, Pa., on Saturday, July 13, 2024. (AP Photo/Gene J. Puskar)
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President Joe Biden speaks in Delaware following a shooting at a rally for President Donald Trump in Butler, Pennsylvania, on July 13, 2024.
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