At around 3.19 am today, the right side of the building came crashing down. At around 3.20 am, portions of six floors of the building came crashing down even as fire fighters struggled to put out the blaze.
Over 350 personnel and 25 water tenders were pressed into service besides several Metrowater tanker lorries.
Until afternoon, they were not able to put out the fire in the front portion of the building since it was covered with glass, wood and a concrete wall. There was no opening for the fire brigade to spray water inside.
Officials had told the media that the pillars of the building had weakened due to the fire.
The water spraying operations were suspended in many parts as firefighters believe that if water is shot out with force, it may hasten the collapse even further.
Traffic in and around T Nagar and Panagal Park was affected. Bus service towards Ashok Nagar and West Mambalam were affected. Traffic on both sides of the Usman Road towards T Nagar and Mahalingapuram was completely cut off.