Mendez was arrested Monday night in a federal police operation . In 1993 , Mendez was recruited as a founder of the Zetas . He is under investigation for attempted murder and crimes against health , officials say . Flavio Mendez Santiago was on a list of Mexico City 's one most-wanted fugitives .
Mendez was arrested Monday night in a federal police operation . He is under investigation for attempted murder and crimes against health , officials say . Flavio Mendez Santiago was on a list of Mexico City 's one most-wanted fugitives .