A man who is alleged to be the chief money launderer for drug cartel kingpin Joaquin “El Chapo” Guzmán has been arrested in Mexico. Police said Juan Manuel Alvarez, dubbed King Midas for his purported ability to wash up more than $4 billion in drug money over a decade, was arrested Sunday on a provisional extradition warrant from the U.S., where he is wanted on money-laundering charges. Alvarez’s arrest was reportedly the result of a joint operation among police, the army, and Mexico’s interior department. Officials said he was in Oaxaca on vacation when he was detained. Guzmán made headlines in July last year when he made an audacious escape from Mexico’s maximum-security Altiplano prison. He was recaptured in January this year.