The injured persons are undergoing treatment at Gudiyatham Government Hospital and Government Vellore Medical College Hospital in Adukkamparai.
Firecrackers stored illegally allegedly caused the explosion; house owners on the run
Police said the unit was run by Ramanathan (44) in his house in a residential area. The multi-storey building has a single room on the second floor and a water tank above.
An investigation has begun to determine what caused the collapse and whether there were lapses on the part of regulatory agencies.
It took a string of building collapses during September-October for the civic authorities in Bengaluru to wake up and start counting unsafe buildings.
As of now, the BSES is cutting the wires from the pole to make the process of searching and demolishing the house safely.
The BBMP is searching for the building owner identified as Rajeshwari, who had taken a loan from Syndicate Bank.
Parts of the eight-storey structure hit two two-storey buildings, damaging them, an official said, adding two adjoining buildings, including a hotel, were also at risk.
The portion of the building at 9 Ahiritola lane, where two families have been staying, collapsed at around 6.40 am.
They had left for work at the time; neighbours had called owner, told him about sound
The ruling Aam Aadmi Party on Tuesday blamed the Bhartiya Janata Party responsible for the building collapse in Sabzi Mandi area which claimed two lives.
Sabzi Mandi building collapse: 'Renovation work weakened structure, one arrested', says Delhi police
Preliminary investigation has revealed that a resident had got a platform removed from the ground floor of the building on Sunday during the ongoing renovation work at his shop.
An elderly man, who owned a paan shop in the single-storey building adjacent to the collapsed structure, sustained serious injuries and is undergoing treatment at Bada Hindu Rao Hospital.
A person trapped under the debris was rescued and rushed to a nearby hospital, a senior police officer said, adding that the rescue operations were still underway.
An official from the TMC's disaster control room said that the deceased were identified as Rameez Shaikh (32) and Goss Tamboli (38), while the third person was under treatment.