WASHINGTON, Dec 12 (Reuters) - The U.S. Securities and Exchange Commission separately authorized charges relating to FTX founder Sam Bankman-Fried's violations of securities laws, the regulator said on Monday.

Bankman-Fried, who founded and led FTX until a liquidity crunch forced the Bahamas-based cryptocurrency exchange to declare bankruptcy, was arrested on Monday in the Bahamas after being criminally charged by U.S. prosecutors.

"The Securities and Exchange Commission has separately authorized charges relating to Mr. Bankman-Fried’s violations of our securities laws, which will be filed publicly tomorrow in the Southern District of New York," SEC official Gurbir Grewal said in a statement. (Reporting by Kanishka Singh in Washington; Editing by Clarence Fernandez)