The Department of Homeland Security has responded after anti-ICE protesters in Portland, Oregon stormed an ICE facility and assaulted federal law enforcement officers on Saturday. 

"Secretary Noem’s message to the rioters is clear: you will not stop us or slow us down. ICE and our federal law enforcement partners will continue to enforce the law," reads a post on X. "If you lay a hand on a law enforcement officer, you will be prosecuted to the fullest extent of the law."

Multiple police officers were injured Saturday night in the attack - which included a mob launching fireworks, smoke grenades and rocks at federal law enforcement, causing property damage as they forcibly entered the ICE facility. 

Four officers were injured in the attack, which came after the city hosted a "No Kings" protest at 1 p.m. - which was framed by officials as a "large-scale free speech gathering." 

Tens of thousands of people showed up to march through downtown and returned to Waterfront Park around 4 p.m. - around five miles from the ICE field location, Fox News reports.

At around 6:30 p.m., the Portland Police Bureau (PPB) declared an unlawful assembly, while at around 8 p.m. they observed criminal activity - including assault and criminal mischief, and announced that they would be making targeted arrests.

"Portland rioters are violently targeting federal law enforcement and we won’t sit idly by and watch these cowards," Homeland Security Assistant Secretary Tricia McLaughlin told Fox News Digital. "Secretary [Kristi] Noem’s message to the rioters is clear: you will not stop us or slow us down. ICE and our federal law enforcement partners will continue to enforce the law. And if you lay a hand on a law enforcement officer, you will be prosecuted to the fullest extent of the law."