The military has put about 700 Marines on high alert to possibly deploy to Los Angeles, three U.S. officials told CBS News, two days after Secretary of Defense Pete Hegseth said they could be sent to the city "if violence continues."

A relative state of calm in Los Angeles began to crumble early Sunday afternoon as demonstrators confronted federal authorities guarding a downtown detention facility where chaos erupted as National Guard soldiers deployed tear gas on an increasingly agitated crowd.