Jonathan Sloan, 33, of Lawrence, and his father, Clark Sloan, 55, of Tonganoxie, were convicted Thursday in federal court of trafficking synthetic marijuana out of retail stores in Lawrence and Tonganoxie, the U.S. District Attorney’s office said.

The men sold marijuana substitute K2 out of Persephone’s Journey, 1103 Massachusetts St., and Bouncing Bear Botanicals, located in the basement of Persephone’s Journey, according to the U.S. District Attorney’s office.

Bouncing Bear Botanicals was later moved to a warehouse in Tonganoxie.

The business grew to encompass a chain of suppliers, retailers, wholesalers and business associates with locations in Kansas, California, Massachusetts, New Jersey, Oregon, Nevada, Indiana, Argentina, Latvia, Germany, Lithuania, the United Kingdom, Ukraine, the Netherlands, Canada, Sweden, Singapore, Thailand and Uruguay, the U.S. District Attorney’s office said. The defendants made at least $3.3 million from the sale of the drugs.

A federal jury convicted the men of one count of conspiracy, two counts of misbranding, 15 counts of mail fraud, one count of smuggling and one count of money laundering, the U.S. District Attoney’s office said.

Sentencing will be on Jan. 26, 2015. The defendants could face up to 430 months in prison and be ordered to pay fines of up to $500,000 for money laundering and $250,000 for each of the other counts.