The Secret Service assists Republican presidential candidate and former President Donald Trump during a campaign rally at the Butler Farm Show in Butler, Pennsylvania [Source: Reuters]

Donald Trump was safe, the U.S. Secret Service and his campaign said after multiple shots rang out at a rally by the Republican presidential candidate in Pennsylvania as video showed Trump grimacing and raising a hand to his right ear.

The former president had just started his speech when gunshots erupted and Trump and other rally attendees hit the deck. Secret Service agents swarmed around him and live video showed blood on the right side of Trump’s face and ear.

Trump repeatedly raised his fist in the air, with an American flag visible behind him, as security ushered him away.

“The Secret Service has implemented protective measures and the former president is safe,” a spokesperson for the agency said on X after what it called an incident. “This is now an active Secret Service investigation and further information will be released when available.”

CNN reported that Trump was injured, but gave no other details. It was not clear how or what injuries he may have sustained.

One person is believed to be dead, Pittsburgh ABC affiliate WTAE reported, citing Butler County District Attorney Richard Goldfinger
One witness, Ron Moose, said he heard what sounded like four shots, describing the sound as “pop, pop, pop.”

Trump’s campaign spokesperson said Trump was fine and that he was being checked out at a local medical facility.

“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. More details will follow,” spokesperson Steven Cheung said in a statement.

The venue was abandoned with chairs knocked over and yellow police tape around the stage. A helicopter flew above and law enforcement officers walked through the area, the video feed showed. Armed law enforcement officers were also seen on a roof near the stage where Trump was standing.

U.S. President Joe Biden received and initial briefing on the incident, the White House said.

Trump and Biden are locked in a close election rematch, with most opinion polls including those by Reuters/Ipsos showing the two evenly matched.

Trump is due to receive the Republican nomination formally at the Republican National Convention that kicks off in Milwaukee on Monday.

Biden has been facing his own pushback within his own party following a disastrous debate performance against the former president a little more than two weeks ago.

Trump, who served as president from 2017-2021, easily bested his rivals for the Republican nomination early in the campaign and has largely unified around him the party that had briefly wavered in support after his supporters attacked the U.S. Capitol on Jan. 6, 2021, attempting to overturn his 2020 election defeat.

The businessman and former reality television star entered the year facing a raft of legal worries, including four separate criminal prosecutions. He was found guilty in late May of trying to cover up hush money payments to a porn star, but the other three prosecutions he faces — including two for his attempts to overturn his defeat — have been ground to a halt by various factors including a Supreme Court decision early this month that found him to be partly immune to prosecution.