19 people have been arrested for stealing and selling credit card data.The ringleader of the gang is reportedly an Algerian who helped financed the 9/11 terror attacks.
Spanish police announced on Saturday that they had arrested 19 people in connection with a fake credit card ring.
One of the suspects was a 49-year-old Algerian who has already spent time in prison after being convicted of helping to fund the September 11 attacks.
All nineteen were arrested in Madrid on suspicion of running a scam selling cloned credit cards.
The Algerian financier, whose name has been withheld by US police, is thought to have been the ringleader.
Spain was the scene of a high-profile mass trial of 9/11 plotters in 2005 that led to the imprisonment of 18 individuals linked to al-Qaeda.
The northeastern Spanish city of Tarragona was also the scene of a top-level meeting of conspirators just months before the attacks. One of the attendees was pilot ringleader Mohammed Atta. It is believed this meeting was to finalize preparation for the atrocities.