The three co-founders of a cryptocurrency promoted by boxer Floyd Mayweather and record producer DJ Khaled have been indicted by a federal grand jury, and stand accused of planning to defraud investors out of millions of dollars.

The U.S. Attorney’s Office for the Southern District of New York announced Monday that Sohrab Sharma, Raymond Trapani and Robert Farkas, the co-founders of Centra Tech — which created the Centra token — are being charged with conspiracy and the commission of securities and wire fraud.