More than 500 firefighters were deployed at the spot with five water vouchers, five hydraulic tankers, ten water tankers, two heavy water tankers, three ambulances and three other vehicles for rescue operations.
The officer said that private companies including Essar, Reliance, NTPC, Kribhko and ONGC had also sent their equipment.
The exact reason behind the fire was not known, though some officials belive that it caused due to a short circuit. As per onlookers' accounts, the fire reached all top floors of the building.
Firefighters have been ordered not to leave the place or ignore any untoward incident.