Fire continued to rage in the 13th storeyed Nandaram Market building in Burrabazar area in Kolkata, the biggest wholesale market in the country, where the blaze destroyed about 3000 shops housed in several buildings since early Saturday.
Several cracks have appeared in the front part of the Nandaram Market building which have slightly leaned to its left and flames were seen raging from the top few floors, Commissioner of Police Gautam Mohan Chakraborty said.
But engineers at the site were of the opinion that it would not immediately collapse, he said adding that residents of nearby areas were moved to safer places.
Chakraborty said he was hopeful that personnel of the Army and fire brigade would be able to bring the fire under control during the day.
The intense heat generated by the fire was absorbing the water sprayed and causing the flames to spread, he said adding what was needed was continuous supply of water.
He ruled out use of foam to douse the fire as it is used if petrochemical products are stored nearby.
An explosion, probably caused by diesel stacked in the generator room in the 13th floor of Nandaram market, occurred last evening.
The police commissioner said no more explosions were reported during the night.
All roads in the area were remained closed for transport with over 50 fire tenders, including those of the Army and Air Force, trying to douse the fire.