A medium fire broke out in the cargo terminal of the Indira Gandhi International Airport at New Delhi early this morning but there were no immediate reports of any casualty.Police and fire brigade officials said that the blaze erupted at around 1.15 AM and 22 fire tenders were rushed to the spot.They said that the cause of the fire is yet to be ascertained.The cargo terminal is located at a distance of about onekm from Terminal 3.