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The U.S. Marines detained their first civilian protester in Los Angeles Friday, U.S. defense officials told Fox News.
The civilian, who has not yet been identified, was temporarily detained and handed over to law enforcement, according to authorities.
Marines arrived in the city Friday after training for days for potential encounters with protesters.
Maj. Gen. Scott Sherman, head of Task Force 51, which is overseeing the deployment of the National Guard and Marines to Los Angeles, speaks to reporters Wednesday, June 11, 2025 at the Joint Forces Training Base in Los Alamitos, Calif. (AP Photo/Amy Taxin)
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A U.S. official told Fox News Title 10 forces can temporarily detain individuals and transfer them to law enforcement.
"'Temporary detainment' is different than an arrest," the official said. "The Marines are not allowed to use handcuffs or zip ties to detain any individuals. They use an arm hold to escort the person to law enforcement, who will then decide what to do with the individual."
U.S. National Guard troops are deployed around downtown Los Angeles Sunday, June 8, 2025, after an immigration raid protest the night before. (AP Photo/Eric Thayer)
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An official with the United States Northern Command (U.S. NORTHCOM) said any temporary detention ends immediately when the individual can be safely transferred to the custody of appropriate civilian law enforcement personnel.
The arrest was made as law enforcement gears up for planned nationwide protests against the Trump administration Saturday.
Protesters confront Los Angeles Police Department personnel in riot gear in downtown Los Angeles Monday, June 9, 2025. (AP Photo/Eric Thayer)
Organized by No Kings, protesters will gather for a "nationwide day of defiance" in thousands of cities across the U.S.
"From city blocks to small towns, from courthouse steps to community parks, we’re taking action to reject authoritarianism — and show the world what democracy really looks like," the organization wrote on its website. "The flag doesn’t belong to President Trump. It belongs to us. We’re not watching history happen. We’re making it."
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Los Angeles authorities said they have increased patrols and are prepared for potential escalations.
Alexandra Koch is a breaking news writer for Fox News Digital. Prior to joining Fox News, Alexandra covered breaking news, crime, religion, and the military in the southeast.