Mancera has worked as candidate attorney, lawyer, and adviser at several law firms, including García Cordero y Asociados and Grupo de Abogados Consultores [REF].
On July 8, 2008,[REF] Mancera was named Attorney General of Mexico City, after Rodolfo Félix Cárdenas was dismissed from office because of the News Divine Bar incident,[REF] in which nine teenagers and three police officers died in a botched police raid [REF].