A massive fire broke out in Mundka in northwest Delhi early this morning, engulfing an over one-kilometre long area, but no casualties have been reported. Officials said the fire, was deliberately ignited by someone.<br/><br/>30 fire tenders are still struggling to contain it.<br/><br/>An official from fire Department said the incident occurred in an open area where a lot of scrap is kept.<br/><br/>An estimated 50 cylinders burst due to the fire, further augmenting it. <br/><br/>The fire spread to an area 1.5 km long and 200 yards wide.<br/><br/>However, there is no residential colony in the<br/>