Chennai: A major portion of seven-storeyed Chennai Silks building on Usman Road in T.Nagar, crumbled during the early hours of June 1, 2017, after a major fire engulfed the building on Wednesday. On Wednesday the fire destroyed all goods stocked in the showroom. Almost 32 hours later, the fire brigade are still attempting to control the flames. The fire was triggered time and again thereby causing the front portion of the building to entirely collapse. Meanwhile the city police registered a case by calling it an accidental fire. The cause of accident is yet to be investigated with help of forensic experts, said a senior official of the city police. The initial investigation revealed that some barrels of diesel to be used for power generators were stocked in the basement.