US authorities say fentanyl is now the main driver of US drug overdose deaths. In March President López Obrador said he had written to Chinese President Xi Jinping requesting Chinese help in the anti-narcotics fight, after US politicians had urged him to do so. He told reporters on Friday that he would repeat that plea to Beijing: "In a very respectful manner, we are going to send this information to reiterate the request that they help us."
Mexican Navy Secretary Rafael Ojeda said the container intercepted in Lázaro Cárdenas had packages weighing 34-35kg (75 pounds) with traces of fentanyl and methamphetamine hidden in fuel resin. The cargo had left the Chinese city of Qingdao and passed through Busan in South Korea before reaching Mexico.