A man carrying a shotgun and a fuel can has been shot and killed by United States Secret Service agents after he broke into the secure perimeter at Mar-a-Lago.
The US Secret Service said in a statement he was observed at the Florida resort's north gate around 1:30am, local time.
Mr Trump is currently in Washington and was not at the site at the time.
The man in Sunday's incident was identified as Austin Tucker Martin, 21, from North Carolina, according to a source familiar with the investigation. Mr Martin was reported missing within the last few days, according to the source.
Two US Secret Service agents and a Palm Beach County Sheriff's deputy confronted the man and ordered him to drop the two items, Palm Beach County Sheriff Ric Bradshaw said at a press conference on Sunday morning.
The man put down the gas can and raised the shotgun "to a shooting position", prompting law enforcement to open fire, Mr Bradshaw said.
The man was declared dead at the scene. No law enforcement officers were injured.
White House spokesperson Karoline Leavitt said the Secret Service "acted quickly and decisively to neutralise a crazy person, armed with a gun and a gas canister, who intruded President Trump's home".
The United States has seen a spike in political violence.
In 2024, a gunman's bullet grazed Mr Trump's ear during a campaign rally in Pennsylvania, and a man later convicted of attempted assassination was spotted hiding in the bushes of a Florida golf course with a semi-automatic rifle while Mr Trump was on the course.
FBI heads investigation
Law enforcement officials did not reveal any information about the motive for the incident. The FBI took over the investigation and was collecting evidence from the scene, officials said.
FBI Director Kash Patel said in a social media post that the agency was "dedicating all necessary resources" to the investigation.
Treasury Secretary Scott Bessent said he spoke with Mr Trump after the incident.
Mr Bessent thanked the Secret Service for protecting the president and his family.
"We don't know whether this person was a mastermind, unhinged or what," Mr Bessent said on the Fox News program Sunday Morning Futures with Maria Bartiromo.
Reuters