While details of the plan were unclear, the administration is preparing to deploy hundreds of National Guard troops to Washington, a US official told Reuters, a controversial tactic Trump used recently in Los Angeles to tackle immigration protests.
Trump has not made a final decision, the official said, adding the number of troops and their role are still being determined.
Unlike in California and every other state, where the governor typically decides when to activate Guard troops, the president directly controls the National Guard in Washington, D.C.
Past instances of the Guard's deployment in the city include in response to the January 6, 2021, attack on the US Capitol by a mob of Trump supporters.
"The Homeless have to move out, IMMEDIATELY," Trump posted on his Truth Social platform. "We will give you places to stay, but FAR from the Capital. The Criminals, you don't have to move out. We're going to put you in jail where you belong."
The White House declined to explain what legal authority Trump would use to evict people from Washington. The Republican president controls only federal land and buildings in the city.
Trump plans to hold a press conference later on Monday to "stop violent crime in Washington, D.C." It was not clear whether he would announce more details of his eviction plan then.
There are 3782 single persons experiencing homelessness on any given night in the US city of about 700,000, says the Community Partnership, an organisation working to reduce homelessness in D.C.
Most such individuals are in emergency shelters or transitional housing, rather than on the street, it says.
A White House official said on Friday more federal law enforcement officers were being deployed in the city following a violent attack on a young administration staffer that angered the president.
Alleged crimes investigated by federal agents on Friday night included "multiple persons carrying a pistol without license," motorists driving on suspended licenses and dirt bike riding, a White House official said.
The official said 450 federal law enforcement officers were deployed across the city on Saturday.
The city's police department says violent crime was down 26 per cent in D.C. in the first seven months of 2025, compared with last year, while overall crime was down about seven per cent.
The Democratic mayor of Washington, D.C., Muriel Bowser, said the US capital was "not experiencing a crime spike."
"It is true that we had a terrible spike in crime in 2023, but this is not 2023," Bowser said on MSNBC's the Weekend. "We have spent over the last two years driving down violent crime in this city, driving it down to a 30-year low."
Bowser said Trump was "very aware" of the city's work with law enforcement after meeting him several weeks ago in the Oval Office.