Miami Man Pleads Guilty to Importing Synthetic Cathinones from China

MIAMI - A Miami man pleaded guilty today to drug-trafficking offenses related to the importation of N-Isopropyl Butylone, a Schedule I drug and synthetic cathinone, from China into the U.S. for distribution in South Florida.

According to court documents, Terrell Jermaine Williams, 40, conspired with a China-based drug distributor to import controlled substances into the U.S. for distribution in Miami. The conspiracy began in or around 2022 and continued through 2025.

"This defendant worked with a supplier overseas to bring a dangerous synthetic drug into South Florida and profit from its distribution," said U.S. Attorney Jason A. Reding Quiñones for the Southern District of Florida. "Synthetic cathinones-often referred to on the street as 'bath salts' or 'flakka'-are powerful and unpredictable stimulants that pose a serious threat to public safety. Our Office will continue working with the Homeland Security Task Force and our federal, local, and international partners to stop these trafficking pipelines and prevent dangerous narcotics from reaching our communities."

To facilitate the scheme, Williams communicated with the Chinese distributor through a mobile-based messaging platform. In a message dated Nov. 3, 2023, the distributor encouraged Williams to stock up on the substance before it was banned so he could charge higher prices when it became unavailable to others.

In another conversation in April 2024, the distributor warned Williams, "its election year there , they check more frequently than before, you know firearms and drugs from china."

The distributor also sent Williams photographs of the controlled substances through the messaging platform.

Information developed during the investigation was shared with Homeland Security Investigations (HSI) Guangzhou in China. HSI Guangzhou coordinated with Chinese law enforcement authorities, who initiated a parallel investigation. In September 2025, China's Anti-Smuggling Bureau (ASB) and other regulatory agencies seized approximately 700 kilograms of N-Isopropyl Butylone believed to be destined for the U.S.

At the time of the seizure, N-Isopropyl Butylone was not yet a regulated substance in China. Following the seizure, Chinese authorities determined that the substance had no legitimate use and subsequently placed it under regulatory control, restricting its manufacture.

Williams pleaded guilty to conspiracy to import N-Isopropyl Butylone into the U.S. and conspiracy to possess with intent to distribute N-Isopropyl Butylone. He faces up to 20 years in federal prison on each count. A federal district court judge will determine any sentence after considering the U.S. Sentencing Guidelines and other statutory factors.

U.S. Attorney Reding Quiñones, Acting Special Agent in Charge José R. Figueroa of HSI Miami, and Inspector in Charge Bladismir Rojo of the U.S. Postal Inspection Service (USPIS), Miami Division, made the announcement.

HSI Miami, HSI Guangzhou, USPIS, and the Homestead Police Department are investigating the case. Customs and Border Protection (CBP), Miami-Dade Sheriff's Office, and City of Miami Police Department provided invaluable assistance.

Assistant U.S. Attorney Monique Botero is prosecuting the case.

This prosecution is part of the Homeland Security Task Force (HSTF) initiative established by Executive Order 14159, Protecting the American People Against Invasion. The HSTF is a whole-of-government partnership dedicated to eliminating criminal cartels, foreign gangs, transnational criminal organizations, and human smuggling and trafficking rings operating in the United States and abroad. Through historic interagency collaboration, the HSTF directs the full might of United States law enforcement towards identifying, investigating, and prosecuting the full spectrum of crimes committed by these organizations, which have long fueled violence and instability within our borders. In performing this work, the HSTF places special emphasis on investigating and prosecuting those engaged in child trafficking or other crimes involving children. The HSTF further utilizes all available tools to prosecute and remove the most violent criminal aliens from the United States. HSTF Miami comprises agents and officers from HSI Miami, HSI Guangzhou, CBP, USPIS, the Homestead Police Department, Miami-Dade Sheriff's Office, and City of Miami Police Department, with the prosecution being led by the United States Attorney's Office for the Southern District of Florida.

Related court documents and information may be found on the website of the District Court for the Southern District of Florida at www.flsd.uscourts.govLinks to other government and non-government sites will typically appear with the "external link" icon to indicate that you are leaving the Department of Justice website when you click the link. or at http://pacer.flsd.uscourts.govLinks to other government and non-government sites will typically appear with the "external link" icon to indicate that you are leaving the Department of Justice website when you click the link., under case number 25-cr-20471.

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