While six bodies have been pulled out of the debris, those injured have been admitted to a local hospital where the condition of some are said to be serious.
"Two of the injured laborers stand very little chance of survival," the official said.
Senior officials have rushed to the spot and supervising the rescue operations, he said, adding a probe has been ordered into the incident and the owner and contractor of the under construction building have been arrested on charges of negligence.
Building collapses are common in India because of poor construction practices, and several people die every year in such incidents across the country.
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