Former U.S. president Donald Trump was seen bleeding from the ear but not seriously injured after a volley of loud pops now reported as gunshots could be heard shortly after the start of his rally in Butler, Pennsylvania, on Saturday.
A report said the shooter and a person attending the rally were killed.
Trump reflexively reached for his right ear after the popping sounds as Secret Service agents yelled "Get down!", according to widely circulated video, which was taken close to the front of the stage.
Trump, 78, ducked down about two seconds later and was swarmed by security.
He then eventually stood up and defiantly pumped his fist, bleeding from the top of his right ear. Blood streaks also could be seen across the right side of his face.
Trump was rushed into his limousine shortly afterward.
"President Trump thanks law enforcement and first responders for their quick action during this heinous act," said Trump spokesman Steven Cheung, CNN reported. "He is fine and is being checked out at a local medical facility. More details will follow."
The Associated Press, in a bulletin at 7:24 pm EDT, reported "JUST IN: Shooter dead and rally attendee killed at Trump event in Pennsylvania, Butler County district attorney tells AP."
The incident occurred two days before the start of the Republican National Convention in Milwaukee, where Trump will be nominated as the GOP presidential candidate.