The Portland Mayor's office notified protesters camped outside City Hall on Friday that police are prepared to cite people for violations of law.
The notice says protesters may be cited for obstructing the sidewalk, for public drinking and drug use and public indecency.
The city also said tents or other structures are not allowed on the sidewalk.
Caryn Brooks, the communications director for the Mayor's office, says protesters are allowed to sleep outside City Hall, but they cannot keep their belongings on the sidewalk.
"They just can't hang out there all day," Brooks says. "So, they can have a sleeping bag but they can't just leave groups of things that obstruct other people."
Brooks says the city plans to power wash the sidewalks outside City Hall on Monday. That will require the protesters to move their belongings, at least temporarily. Cameron Whitten has been on hunger strike at the site for 42 days. He says he plans to stay.
"And so it is going to be real interesting what happens on Monday. I have no intention of leaving," Whitten says.
The city did not specify a date when police might start issuing citations to protesters.
This story originally appeared on Oregon Public Broadcasting.