Two Chinese companies, accused of supplying the cartel with chemical compounds, are targeted by sanctions from the Treasury Department. The Justice Department also indicted 28 people, including three children of Mexican drug trafficker Joaquín "El Chapo" Guzmán.

"The world must unite, it is no longer just Mexico and the United States. Governments in Europe are seeing what is happening with fentanyl," U.S. ambassador to Mexico says. The United States should face its own problem and take steps to... reduce demand, China's foreign ministry says.