People from Alicante , Madrid ,Lleida , Navarra , Zaragoza , the Balearics and Santa Cruz de Tenerife have been arrested over allegations of dealing in paedophilia—distributing child pornography over the internet .
The Alicante detainee remained free last week after speaking to the police .
Apart from those seven arrested another five have been attributed to the operation .
More than 500 folders containing child pornography have been discovered on discs , lap tops and as photographs.
