As rescue operations by multiple agencies entered the sixth day, Chief Minister J Jayalalithaa announced that the one-man commission headed by Justice (Retd) R Reghupathy will probe the circumstances leading to the collapse of the building at suburban Porur on June 28.
"The Commission will find out whose ignorant attitude resulted in such a mishap that left many workers dead and others injured and decide on (fixing) those responsible for it," she said in a release.
"As of now, 61 are dead and out of this 41 are men and 20 women," K Kulandaisamy, Director, Public Health told PTI.
The focus of the rescue operations was on reaching a spot - estimated to be around 2,000 square feet in the basement - where 20-25 people were feared trapped, revenue officials said adding they wanted to ensure all survivors were pulled out.
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"We hope that the rescue work will be fully completed by evening tomorrow," he said.
A total of 27 persons, including eight women, were rescued alive till July 1.
In a related development, Chennai Metropolitan Development Authority today commenced inspection of high-rise buildings in the city in the backdrop of the mishap.
Eighteen teams comprising 54 officials from the CMDA inspected eight multi-storeyed and 12 special (high-rise) buildings in various parts of the city, a senior CMDA official said.
With four women and a man from Odisha being among the deceased, Odisha Minister for Labour Prafulla Kumar Mallik visited the city and announced a relief of Rs 5 lakh each to the kin of the victims belonging to his state. He also called on those undergoing treatment at a private hospital here.