New Delhi, Dec 5 (UNI) A massive fire broke out in the slums of Rithala area of the national capital, fire officials said today. They said the incident occurred late last night at around 2330 hrs and 25 fire tenders were immediately rushed to the spot. The fire was brought under control at 0615 hrs, the officials said. "No casualty has been reported so far. The exact cause of the fire is yet to be ascertained," they said. UNI DS SV SB 0952