Police in Portland made multiple arrests Wednesday night after a protest near an Immigration & Customs Enforcement (ICE) building that was declared an unlawful assembly.

"Failure to comply with this order may subject you to citation or arrest, and may subject you to the use of tear gas, crowd control agents, and impact munitions," police said.

Around 10 p.m. a group of roughly 200 people marched from Elizabeth Caruthers Park to the Portland ICE building. Some protesters spray-painted messages like “Day 91, we won’t quit," on the facility, according to The Oregonian.

OREGON PROTESTER CONVICTED OF ARSON IN POLICE PRECINCT FIRE GETS PROBATION, COMMUNITY SERVICE

A Portland police officer scans the crowd while dispersing protesters from in front of the Immigration and Customs Enforcement (ICE) detention facility early in the morning on August 21, 2020 in Portland, Oregon. (Photo by Nathan Howard/Getty Images)

A Portland police officer scans the crowd while dispersing protesters from in front of the Immigration and Customs Enforcement (ICE) detention facility early in the morning on August 21, 2020 in Portland, Oregon. (Photo by Nathan Howard/Getty Images)

Federal officers emerge from the building a few minutes later. Those in the crowd were seen throwing eggs and objects at the officers. The officers deployed irritants that released green smoke.

Around 11 p.m., Portland police would label the gathering unlawful and order people to leave.

Over the next hour, Portland Police and federal officers pushed the crowd through nearby streets. Police would arrest and detain multiple people throughout the night, according to the paper.

PORTLAND POLICE DECLARE RIOT AFTER PROTESTERS BREAK WINDOWS, ENTER CITY HALL

Last week, police declared a riot at the ICE building after a few demonstrators threw items at the facility -- located in the southern part of the city -- which broke at least one window, reports said.

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The group had met at the same park before 200 or so marched on the building.