Republican presidential candidate Donald Trump was safe after what the FBI said appeared to be an assassination attempt on Sunday while he was golfing on his course in West Palm Beach, Florida.

Law enforcement officials said during an afternoon press conference that the gunman was in some bushes near the property line of the golf course when Secret Service agents, who were clearing holes ahead of where Trump was playing, spotted a rifle barrel in the bushes.

Agents engaged the gunman and fired at least four rounds of ammunition around 1:30 p.m. (1730 GMT). The gunman then dropped his rifle, two backpacks and other items and fled in a black Nissan car. A witness, the sheriff said, saw the gunman and managed to take photos of his car and license plate.

The gunman was spotted about 400 to 500 yards (365 to 457 meters) from where Trump was playing, Palm Beach County Sheriff Ric Bradshaw said, adding: "The Secret Service did exactly what should have been done.”

Authorities then sent out an alert to statewide agencies with the information on the vehicle, which led to sheriff’s deputies in neighboring Martin County apprehending the suspect on I-95.

"We have somebody in custody right now,” said Bradshaw, who did not identify the suspect or give details on a possible motive.

Trump's campaign had earlier said he was safe following gunshots in his vicinity.

Trump sent an email to his fundraising list saying there were "gunshots in my vicinity, but before rumors start spiraling out of control, I wanted you to hear this first: I AM SAFE AND WELL!" according to an email seen by Reuters.

Trump was injured in an assassination attempt in Pennsylvania on July 13, raising questions about protection for candidates just months ahead of what looks likely to be highly contested Nov. 5 election in which he will face off against Democratic Vice President Kamala Harris.

The White House said in a statement that President Joe Biden and Vice President Kamala Harris had been briefed about the incident and were relieved to know that he is safe.

"Violence has no place in America," Harris said in an X social media post.

Trump's running mate in the presidential election, U.S. Senator JD Vance, said he spoke to Trump after the shooting and that the former president was in good spirits.

The first shooting of a U.S. president or major party presidential candidate in more than four decades was a glaring security lapse that forced Kimberly Cheatle to resign as Secret Service director under bipartisan congressional pressure.

Trump was grazed in the right ear and one rallygoer was killed in the gunfire. The gunman, identified as 20-year-old Thomas Crooks, was shot and killed by a Secret Service sniper.

The U.S. Secret Service's new acting director said in August that he was "ashamed" of a security lapse that led to the assassination attempt.