Protests live updates: Marines make 1st temporary detention in LA

Multiple people were detained after reentering an area the Los Angeles Police Department had ordered them to leave, the department said.

"Those detained will be arrested and booked for failing to disperse from an area where an unlawful assembly was ordered," the department’s Central Division said in a statement posted on social media at midnight.

An order to disperse had been issued about three hours prior.

The division said "multiple" people were detained on Alameda Street between Aliso and Temple streets, which are near the local office of the U.S. Justice Department, on the eastern side of Downtown Los Angeles.

Police officials didn’t say how many people had been taken into custody.

-ABC News' Jessica Gorman

LA Mayor Karen Bass, who condemned the Trump administration's immigration enforcement actions on Friday as stoking fear, called reports of unrest Saturday outside the city limits disturbing.

"This is a difficult time for our city," Bass said in a statement on X. "As we recover from an unprecedented natural disaster, many in our community are feeling fear following recent federal immigration enforcement actions across Los Angeles County. Reports of unrest outside the city, including in Paramount, are deeply concerning. We’ve been in direct contact with officials in Washington, D.C., and are working closely with law enforcement to find the best path forward. Everyone has the right to peacefully protest, but let me be clear: violence and destruction are unacceptable, and those responsible will be held accountable."

In contrast to the clashes seen in the cities of Paramount and Compton, demonstrations in the city of Los Angeles against the Trump administration's immigration enforcement operations "remained peaceful," the Los Angeles Police Department said in a statement.

"While today’s events concluded without incident, the LAPD remains fully prepared to respond swiftly and appropriately to any potential acts of civil unrest. Our commitment to safeguarding the rights, safety, and well-being of all Angelenos continues—day and night."

Defense Secretary Pete Hegseth said the Defense Department is "mobilizing the National Guard IMMEDIATELY to support federal law enforcement in Los Angeles."

Hegseth said if violence continues, "active duty Marines at Camp Pendleton will also be mobilized — they are on high alert."