ISLAMABAD : Federal Investigation Agency (FIA) Saturday arrested four suspects on charges of working for an international child pornography ring during a countrywide crackdown. The four suspects allegedly involved in child pornography have been arrested from Sialkot, Karachi, Faisalabad and Gujranwala. The action was carried out upon the directives of Prime Minister Imran Khan, said the FIA. It said that global anti-crime agency Interpol had shared relevant information regarding the suspects with Islamabad, following which the law enforcement agency had moved to make the arrests. The ring was being operated from the United States, the FIA said. A suspect, identified as Arsalan, was arrested from Sialkot. He was in contact with the group, said the agency. According to the FIA, the ring sold pornographic material featuring minors. Officials confiscated 225GB of data from Arsalan alone. The agency said it is investigating the matter further to uncover more illegal activity and will take appropriate action. The FIA, using the input from Interpol, also cracked down suspects in various other cities. Three suspects allegedly involved in child pornography were arrested from Karachi, Faisalabad and Gujranwala. The FIA said it seized illegal content from the possession of the suspects, adding that further investigation is underway.