Concord, home to a federal immigration courthouse that has been the site of Immigration and Customs Enforcement detainments in recent months, said that since the city has received no indication about a potential deployment, it has not made specific preparations “beyond continuing to monitor the situation.”

Officials say Border Patrol's operations in the Northern California area could start as early as later this week, but that the timing could shift.

The Times, citing the U.S. Coast Guard and three unnamed officials, reported that the federal agents are planning to gather at the Coast Guard base in Alameda, California. The Chronicle reported that more than 100 federal agents,