The 700 Marines deployed to Los Angeles by President Donald Trump have not yet hit the streets and are instead on standby and carrying out nonlethal training.

Authorities swept in with flash-bangs and tear gas grenades to disperse hundreds of protesters in Los Angeles.

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.

Los Angeles endured a sixth day of protests that have been largely peaceful, mostly contained to a few blocks of the city's downtown area.

The Marines began nonlethal training while preparing to deploy to Los Angeles to supplement National Guardsmen there.

The spokesperson told CNN the Marines "have not completed [Standing Rules for the Use of Force] and nonlethal weapons training."

Los Angeles Mayor Karen Bass said the protests were limited to about five downtown streets, but declared a curfew for parts of the downtown area due to violence and looting.

It's been five days since anti-ICE demonstrations erupted in Los Angeles, some turning violent between protesters and law enforcement officers, prompting President Trump to deploy National Guard troops and hundreds of Marines.

A Marine Corps spokesman told BI there were concerns about prank calls, harassment, and doxxing of leaders and their families amid the protests.

Protesters and police have faced off in Los Angeles, and anti-ICE protests are popping up across the country. Follow for live updates.