Attorney Michael Avenatti is being charged with four extortion-related counts in the Southern District of New York over alleged attempts to blackmail Nike Inc. for millions in meetings with the company’s inside and outside counsel.

In a complaint released Monday, Federal Bureau of Investigation special agent Christopher Harper claimed Avenatti met with an in-house Nike lawyer and two outside counsel representatives on March 19. He allegedly told the lawyers a client he represented knew of concealed Nike payments to top-performing high school athletes.