Photos show former Pres. Donald Trump swarmed by Secret Service agents and rushed off stage after shots were fired during a rally in Butler, Pennsylvania on Saturday.
Officials briefed on the investigation told ABC News that the shooting -- a chilling development on the eve of the Republican National Convention -- was being investigated as a possible assassination attempt and that live rounds were apparently fired from outside the security perimeter.
The Secret Service, in a statement, said that a shooter "fired multiple shots toward the stage from an elevated position outside of the rally venue" after which agents "neutralized the shooter, who is now deceased." They went on to say that one spectator was killed and two others critically injured.
A spokesperson for Trump said in a statement, "President Trump thanks law enforcement and first responders for their quick action during this heinous act. He is fine and is being checked out at a local medical facility."
Take a look at the latest updates on the deadly shooting here.
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)
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)
Republican presidential candidate former President Donald Trump is covered by U.S. Secret Service agents at a campaign rally, Saturday, July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci)
People take cover as U.S. Secret Service agents surround Republican presidential candidate former President Donald Trump on stage at a campaign rally in Butler, Pa. (AP Photo/Evan Vucci)
Former President Donald Trump is surrounded by U.S. Secret Service agents as he leaves the stage at a campaign rally, Saturday, July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci)
Former President Donald Trump gestures as he is surrounded by U.S. Secret Service agents as he leaves the stage at a campaign rally, Saturday, July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci)
Republican presidential candidate former President Donald Trump pumps his fist as he is helped off the stage at a campaign event in Butler, Pa., on Saturday, July 13, 2024. (AP Photo/Gene J. Puskar)
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)
Police snipers return fire after shots were fired while Republican presidential candidate former President Donald Trump was speaking at a campaign event in Butler, Pa. (AP Photo/Gene J. Puskar)
Law enforcement officers gather at campaign rally site for Republican presidential candidate former President Donald Trump in Butler, Pa. (AP Photo/Evan Vucci)
A campaign rally site for Republican presidential candidate former President Donald Trump is empty and littered with debris Saturday, July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci)