(Bloomberg) -- The Federal Communications Commission warned about not using amateur or ham radio to facilitate criminal activity. Composer Lin-Manuel Miranda of “Hamilton” fame will take part in the inaugural festivities. A man was arrested on Saturday near the Capitol with a gun and 500 rounds of ammunition in his vehicle.

There are three days until Biden’s swearing in.

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FCC Warns About Use of Ham Radio to Commit Crimes (10:23 a.m.)

Licensed amateur and personal radio services shouldn’t be used to coordinate criminal acts, the FCC’s Enforcement Bureau warned after reports that some people were looking to radios as an alternative to social media platforms, which are being monitored by law enforcement following the deadly Jan. 6 raid on the U.S. Capitol.

“The Bureau reminds amateur licensees that they are prohibited from transmitting ‘communications intended to facilitate a criminal act’ or ‘messages encoded for the purpose of obscuring their meaning,” the agency said in a statement Sunday.

The licensees, which would include Citizens Band radios, Family Radio Service walkie-talkies, and General Mobile Radio Service, would face fines, seizure of their equipment and possible criminal prosecution.

Miranda Added to List of Inauguration Entertainers (10:00 a.m.)

Lin-Manuel Miranda, the creator of the Broadway play ‘Hamilton,’ was added to the roster of artists taking part in inauguration day activities, the Biden campaign announced on Sunday.

Miranda was part of a new list of participants in the Wednesday evening program, along with chef Jose Andres, former NBA star Kareem Abdul-Jabbar, labor leader Dolores Huerta, and the Miami Marlins’ Kim Ng, the highest ranking female executive in Major League Baseball.

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