Extremists pose a threat to President-elect Joe Biden's Jan. 20 inaugural.

That's the Department of Homeland Security's latest intelligence bulletin.

In Columbia, local law enforcement is responding to FBI warnings of protests at state capitals.

No Lexington County protests are expected but the Chronicle asked local law enforcement to confirm this.

A US official confirmed to CBS News that Washington is locking down ahead of the Jan. 20 inaugural.

Officials said extremists are motivated by the belief that Biden is an illegitimate president elected by ballot fraud.

In Florida, federal agents arrested a self-admitted anarchist and “hardcore leftist” Friday.

Prosecutors said they arresting Daniel Baker, 33, on suspicion of plotting to violently disrupt planned election-related protests at the Florida state Capitol.

Baker is charged with making a threat to kidnap or injure pro-Trump protesters.

Prosecutors said Baker "called for others to join him in encircling any protestors and confining them at the Capitol complex using firearms.”

“If you’re afraid to die fighting the enemy, stay in bed and live,” he wrote.

He called Trump supporters “terrorists.”

Baker was a US Army Airborne infantryman who was kicked out of the service.

In 2017, he joined the People’s Protection Units fighting in Syria against ISIS and the Turkish government. 

In Washington, the Homeland Security bulletin blamed foreign adversaries for disinformation encouraging protests.

The bulletin warns of violence against public officials, government buildings and federal and local law enforcement.

FBI director Chris Wray said they have tracked an "extensive amount of concerning online chatter" about protests in state capitols. 

In Texas, a Dallas realtor who prosecutors say took a private plane to Washington was arrested.

And charges were made against a man who said he contacted authorities about the death of USAF veteran Ashli Babbitt who was killed by Capitol police.

David Charles Mish Jr., reportedly said Babbitt told an officer, "Just open the door. They're not going to stop." 

Mish was charged with unlawful entry to restricted buildings and violent entry and disorderly conduct.

2 Capitol police officers told CBS News they didn't think they would make it out of the assault alive.

Another protester yelled to "Kill him with his own gun."  

Officer Mike Fanone described the assault as a "coordinated effort." 

"They were almost counting cadence as they were pushing against us," he said.

Unconfirmed reports said left and right wing extremists were in the mob at Capitol Hill.

Specific leftist groups such as Antifa and the rightist Boogaloo Boys were not named.