A multi-agency international operation, led by Central Bureau of Investigation, has stumbled upon an organised racket of trafficking young Nepalese girls to Dubai for alleged prostitution, Delhi's IGI airport is the transit point for their travelling to the gulf country. The investigation has revealed that nearly 6000-8000 Nepalese girls aged between 20 to 30 years have been trafficked to Dubai via Delhi till December 2014.The agency has informed the ministry of external affairs, ministry of home affairs, bureau of immigration and Nepal authorities through Interpol about the organised syndicate, which sends the girls on tourist visas. The sources said during the inquiry which was being covertly conducted by the agency, probe officers collected information from Foreign Regional Registration Office, Air India, Qatar Airways, Bureau of Immigration and 15 travel agents based in Delhi.