By Omar Younis, Brad Brooks, Phil Stewart and Idrees Ali LOS ANGELES (Reuters) -U.S. Marines deployed to Los Angeles made their first detention of a civilian on Friday, part of a rare use of military force to support domestic police and coming ahead of national protests over President Donald Trump's military parade in Washington.

More than 100 people were arrested on Monday night in Los Angeles, as "fringe groups" continued late-night protests, City of Los Angeles Mayor Karen Bass said.

California Gov. Gavin Newsom delivered a statewide address on Tuesday in the wake of immigration operations that sparked days of protest in Los Angeles and the deployment of hundreds of National Guard and U.S. Marines troops to the area by President Trump.

By Brad Brooks, Jorge Garcia, Idrees Ali and Phil Stewart LOS ANGELES (Reuters) -U.S. Marines were deployed to Los Angeles on Friday, the military said, in a rare domestic use of its forces after days of protests over immigration raids and as nationwide demonstrations were expected on Saturday,

More than 700 Marines based out of the Marine Corps Air Ground Combat Center in California have been mobilized to respond to the protests in Los Angeles, and the troops will join the thousands of National Guard members who were activated by President Donald Trump over the weekend without the consent of California’s governor or LA’s mayor.

The Pentagon is scrambling to establish rules to guide U.S. Marines who could be faced with the rare and difficult prospect of using force against citizens on American soil, now that the Trump administration is deploying active duty troops to the immigration raid protests in Los Angeles.

Saturday marks the first full day of Marines on duty in Los Angeles, one week after protests against Immigration and Customs Enforcement raids ignited in LA.