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VIDEO: Trump Pennsylvania rally shooting
Law enforcement is investigating a shooting at a campaign rally in Pennsylvania as an assassination attempt against former president Donald Trump.
null - Texas Congressman Ronny Jackson (R-Amarillo) says his nephew was at the Trump rally in Butler, Pennsylvania on Saturday afternoon and was injured in the attempted assassination.
Jackson says his nephew was sitting near where the former president was speaking.
READ MORE: Trump injured but 'fine' during shooting at Pennsylvania rally
He says after the gunshots, his nephew realized he had blood on his neck.
Jackson says his nephew was grazed by something and had a cut on his neck.
He received treatment at the scene.
One attendee at the rally was killed, and two others are in critical condition, according to the Secret Service.
The shooter was also killed.
"Please join my family and me in praying for all who were injured and the life lost. The President and the survivors are lucky to be alive," said Jackson.
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Jackson is expected to speak at the Republican National Convention next week.
Former president Trump is expected to officially accept the Republican nomination at the convention.