The department received a call at 9.15 am and 10 fire tenders were rushed to the spot. It took an hour to douse the flames, a senior officer of the Delhi Fire Service said.
No injury or casualty was reported in the incident, police said.
The cash room, manager’s cabin and other essential records are safe. However, the interiors, computers and furniture were damaged in the fire, a police officer said.
Police said a short circuit led to the blaze.