Jon Cruz , Friday , allegedly used Kik messaging app to meet underage boys . FBI say he persuaded them by sending expensive gift cards . Chat logs show him asking for pictures of feet , and nudes , from 'jock ' boys . Cruz , who teaches at a Bronx school , posts pictures of himself as Liberace . Arrested and charged with multiple sex crimes on 31 .
Jon Cruz , 31 , allegedly used Kik messaging app to meet underage boys . FBI say he persuaded them by sending expensive gift cards . Chat logs show him asking for pictures of feet , and nudes , from 'jock ' boys . Cruz , who teaches at a Bronx school , posts pictures of himself as Liberace . Arrested and charged with multiple sex crimes on Friday .