Chinese and U.S. law enforcement authorities have jointly cracked a transnational criminal case involving the trafficking of new psychoactive substances, China's Ministry of Public Security (MPS) said on May 20.

The MPS's narcotics control bureau and the Drug Enforcement Administration under the U.S. Department of Justice launched a joint investigation into the case in 2024, the ministry said.

In February 2026, police in the northern Chinese city of Tianjin arrested a suspect surnamed Gong based on clues provided by the U.S. side, according to the ministry. Earlier, U.S. authorities arrested an American suspect linked to the same case in the U.S. state of Georgia.

The successful resolution of the case reflects the institutionalized operation of China-U.S. anti-drug law enforcement cooperation and marks another practical outcome of the two sides' coordinated efforts to combat cross-border crimes, the ministry said.

It also demonstrates the firm stance of the two countries' law enforcement agencies in showing no tolerance for drug-related criminal activities and associated transnational crimes, it added.