On Monday, Trump will hold a press conference at the White House, which, according to a post on Truth Social, "will put an end to violent crimes" in the city.
But the president could not entirely keep to himself and wrote already on Sunday about part of the plans.
"The homeless will be forced to move, IMMEDIATELY. We will give you other places to live, but FAR from the capital," he writes on Truth Social.
However, the criminals he also wants to get rid of from the streets do not need to move, he writes. "We will put you in prison, where you belong, It will happen very quickly," writes Donald Trump.
No safe places
Trump does not specify exactly how this will be done, but on Friday, he gave the order for federal police to "protect innocent civilians" for seven days in what he describes as "one of the most dangerous cities in the world" which "will soon become one of the safest".
Forces belonging to the US immigration authority ICE will patrol the streets, according to Politico.
"From tonight, there will be no safe places for criminals in DC," wrote White House press secretary Karoline Leavitt in a statement, which began with the observation that the capital "has been plagued by violent crimes for too long".
Federal control?
Trump has previously also threatened to deploy both military and national guard to do the police's job in Washington DC, in the style of his decision to call in the national guard in California after violent demonstrations in Los Angeles in June.
The president and the capital have rarely agreed, not least Trump has often complained about how dirty he thinks the city is. The inhabitants' love he has not received, according to CBS 90 percent voted for Kamala Harris in the presidential election last year.
In a post on Truth Social on Wednesday, Trump also threatened to take federal control over the city "and manage it as it should be managed". A similar threat came from him in February this year - but he does not have the law on his side, to take federal control requires that Congress repeals a law from 1973.