The fire broke out at around 12:30 am. More than 15 fire engines rushed to the spot and tried to control fire with the help of 150 fire brigade officials. Rescue operation is still on.
The deceased has been identified as K Anbazhagan and the three injured people are - Priya Ravichandran, Murugan and Prabhakaran.
The injured have been taken to a near by hospital for better treatment. One of the injured reportedly received 50 percent burns.
According to sources, important files related with Department of Industries and Commerce and Social Welfare have been destroyed in the massive fire. The reason behind the fire is yet to be known.