Sept. 1 (UPI) -- President Donald Trump praised Washington, D.C., Mayor Muriel Bowser on Monday for supporting a crackdown on crime, as he declared the nation's capital "a crime free zone."

After signing an executive order last month to deploy the National Guard inside the nation's capital, the president said the mayor's support helped bring "crime down to virtually nothing in D.C."

"Wow! Mayor Muriel Bowser of D.C., has become very popular because she worked with me and my great people in bringing crime down to virtually nothing," Trump wrote Monday in a post on Truth Social, as he issued a warning to other Democrats.

"Her statements and actions were positive, instead of others like Pritzker, Wes Moore, Newscum and the 5% approval-rated mayor of Chicago, who spend all of their time trying to justify violent crime, instead of working with us to completely eliminate it," Trump said.

"NOW A CRIME FREE ZONE. Wouldn't it be nice to say that about Chicago, Los Angeles, New York and even the crime-drenched city of Baltimore?" Trump continued. "It can happen and it can happen FAST! Work with us!"