Shakeel Khan, 36, of St. Joseph, Mohammed Saleem, 40, of Diamond Back, California, and Asif Saddiq, 56, of Fullerton, California were all charged in the three count indictment.
All three are accused of distributing synthetic marijuana from March 1, 2011 to April 30, 2014.
Kahn and Saleem are also charged together in one count of aiding and abetting each other to distribute synthetic marijuana labeled as "7H," "777" and "Mr. Nice Guy."
Kahn and Saleem are also charged together in a money-laundering conspiracy in February 2014.
The indictment alleges that Kahn and Saleem conducted financial transactions that involved the proceeds of the alleged drug-trafficking conspiracy.
Kahn allegedly directed a confidential source to send him the $8,750 payment for 3,500 units of synthetic cannabinoids to the bank account of business listed as a wholesale clothing company with a mailing address in California.
This address has been identified as the mailing address for Saleem's secretary/manager. Khan is not a signer on the account. A withdrawal of $7,500 in cash was made at a bank branch in California on the same day.