Arturo Hernandez Cardona, husband of a council member of Iguala, was murdered in 2013. The suspicion pointed towards Jose Luis Abarca, then mayor of Iguala, who had threatened Cardona for demanding fertilizer for local farmers. The murder went unpunished for more than a year, even though the links between the former mayor and the criminal group "Guerreros Unidos" (United Warriors) were known. teleSUR.