A man was arrested in Queens, NY Wednesday and charged with brokering a uranium deal intended for supply to Iran.

According to a complaint filed in the Southern District of Florida, Patrick Campbell, 33, of Freetown, Sierra Leone, was charged with brokering the supply of the goods, knowing that they were destined and intended for supply to Iran, putting Campbell in violation of the International Emergency Economic Powers Act and the Iranian Transaction Regulations.

The complaint filed alleges that Campbell traveled to the U.S. from Sierra Leone on Aug. 21, 2013, bringing with him a sample of uranium.

The uranium was hidden inside the soles of his shoes that were in his luggage, which he believed was being provided to a representative of individuals seeking uranium for Iran.

If convicted, Campbell could face a possible statutory maximum sentence of up to 20 years in prison, followed by three years of supervised release and a possible $1 million fine.