The shots originated outside the fence line of the course. The Associated Press reported that US Secret Service agents opened fire after seeing a person with a firearm near Trump's golf club, adding that no injuries were reported.
The Secret Service said it was investigating the incident, which occurred shortly before 2 pm (1800 GMT).
Trump was injured in an assassination attempt in Pennsylvania on July 13.
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 son, Donald Trump Jr., cited local law enforcement as saying an AK-47 automatic weapon had been discovered in bushes and a suspect has been apprehended, according to a post on X.
The Washington Post said Trump had been golfing at the course when the incident occurred. Secret Service agents took him to a holding room at the club, it said.
Related Story
