China said it dismantled a cross-border drug trafficking network in a joint operation with the US, signaling cooperation on a key bilateral issue just days before a presidential summit in Beijing.

China’s Ministry of Public Security and the US Drug Enforcement Administration have detained two Chinese and three American nationals suspected of drug trafficking, the official Xinhua News Agency reported Monday. Simultaneous operations were conducted early last month in the Chinese provinces of Liaoning and Guangdong, as well as Florida and Nevada, according to the report.