At least six people died, 19 were injured and an estimated 40 others were trapped among the ruins of a five-story building that collapsed Friday in the Indian metropolis of Mumbai.
Emergency management teams worked against the clock looking for survivors, the municipal government said.
Home to some 22 families, the building collapsed at around 6:00 a.m. when most of the residents were sleeping.
Authorities sent heavy machinery to the disaster area to facilitate the clearing of rubble so rescue teams could search for survivors.
A dozen fire companies and four ambulances were rushed to the scene.
First responders have been able to rescue 19 people including a 2-year-old boy and a pregnant woman, while a member of a rescue team was injured.
Eight of those hurt are in critical condition.
The building, constructed by the municipality 30 years ago and mostly inhabited by public employees, was in "ruinous" condition, according to residents to whom the press had access.
The full force of justice will be brought against those responsible for the accident, Mumbai Mayor Sunil Prabhu said.
Buildings collapsing in urban areas are frequent in India due to the poor quality of materials, bad construction and scant respect for building regulations.
This is the second time a building has come crashing down in Mumbai this year, following a similar accident in the Mahim West district last June in which 10 people died.
In April, 74 people died when an illegal building collapsed in Thane, very near the port city. EFE