Duncan House that caught fire on Tuesday. (Sanjoy Chattopadhyaya)
Two of the five floors of Duncan House, a heritage address in the BBD Bag area, were destroyed in a fire that broke out early on Tuesday.
The fire was spotted at 3.45am and was doused around 6.20am. Fifteen fire tenders were deployed to fight the blaze.
"The findings of a preliminary investigation suggests that an electrical short circuit caused the fire. The extent of damage is yet to be ascertained," a fire department official said.
The building was constructed in the early 1900s and houses several offices.
"Nothing was visible inside the building because of thick black smoke. We were aimlessly sprinkling water initially because we could not spot the location of the fire," the fire department officer said.
"We broke open the first-floor window panes and sprayed water inside. Later, water was sprayed on the first floor, too. Furniture, papers and office equipments had caught fire."
During investigation, officers spotted a place where the fire apparently broke out. "We have sought help from forensic experts to be sure about the origin of the fire and whether there was any sabotage," an officer said.