Mexico’s defense ministry said on Sunday that security forces had arrested a suspected cartel member accused of leading the region’s production of fentanyl, which has killed thousands in the United States.

The arrest, which took place Thursday in the state of Sinaloa, came just weeks after President Joe Biden visited Mexico and followed the recent high-profile arrest of cartel leader Ovidio Guzmán.

The suspect is described as a top logistics chief for the notorious drug lord known as «Mayo Zambada,» who jointly headed the powerful Sinaloa cartel.

«It should be noted that the defendant is considered the main producer of fentanyl and methamphetamine pills, in addition to carrying out large-scale transfers of cocaine from Central and South America to the US,» the ministry said in a statement.

Following standard procedure in Mexico, he named him as José «N», without giving his full name.