"We are actively meeting with our federal state and local counterparts and we're assessing intelligence on an ongoing basis," said Los Angeles County Sheriff Alex Villanueva. "We definitely have a plan of action to take from now all the way through Inauguration Day."
The FBI, Department of Homeland Security and other federal agencies issued a bulletin saying there are armed protests planned at all 50 state capitols through at least Jan. 20. The bulletin added some are calling to storm government courthouses and administrative buildings.
RELATED: Federal, local law enforcement prepare for possible armed protest at California state Capitol
The Sacramento Bee reports FBI field offices across the country have been alerted to the possible violence and command posts have set up to communicate with state and local law enforcement, including the California Highway Patrol, which has jurisdiction over the state Capitol.
Gov. Gavin Newsom says California's Capitol has a heightened level of security, but he has not made a decision on whether to activate the National Guard in anticipation of the armed protests.
"We are going to ensure that the safety of our sites, the safety of our elected officials are secure," said Los Angeles police Chief Michel Moore. "We will have added presence, highly visible presence, that will begin by the end of this week and early next week."
This comes as one L.A. City councilmember presented a motion saying any city employee who participated in the insurrection at the U.S. Capitol should be investigated and should face disciplinary actions if appropriate.
RELATED: FBI warned of violent 'war' at Capitol in internal report issued day before deadly riot: Report
Law enforcement is looking to see if anyone from their departments was in Washington, D.C. last week.
Moore says he is directing them to cooperate with the FBI.
"I'm aware of one employee that traveled and took part by attending the speech by President Trump, and his report was that he left prior to the other activities and did not participate in anything that occurred at the capitol," he said.
According to Villanueva, "no one from our department participated in the protest, and if anyone has any information to that extent, please let us know."
Law enforcement is also searching through social media to see if they can find any possible threats.
The Associated Press and ABC News contributed to this report.