It was a disaster waiting to happen. The units doubled up as residence for the labourers at night.
Among those trying to make sense of the tragedy was Mr Babar Ali, 32, who rescued his sister-in-law Maisuma Bibi, woken from her bed on the ground of a first-floor handbags factory, from the flames.
Kishore Singh, a doctor in a government-run hospital there, said another 16 people were being treated for burns or smoke inhalation and were in a stable condition, Singh said.
Numerous victims were asleep when the blaze began, according to Yogesh, a police spokesman who uses one name.
Families of the victims told AFP they were mostly migrant workers who had come from Bihar, one of India's most impoverished states. Delhi Police is learnt to have arrested the brother of the building's owner. "We are verifying the details".
The case has been transferred to the crime branch. No one was injured in that fire. Wishing an early recovery to those injured.
A resident of the area, Mohammed Naushad, said he was woken by people wailing at around 4:30 a.m.
The fire has been completely doused by the fire brigade team and all the persons have been evacuated from the site. At least 27 fire tenders are present at the spot to control the raging inferno.
Police and fire officials said at least 58 others were rescued.
Aam Aadmi Party MP Sanjay Singh said if the factory was operating illegally then the municipal corporation was responsible for shutting it down, ANI reported.
"All of them had fallen unconscious because of smoke", he said. "Gradually, the screams faded", Yasmeen said.
They were "labourers and factory workers sleeping inside this four-or five-storied building", Choudhary said, adding that rescue operations continued after the fire had been extinguished. Many are still feared trapped in the building. It is a factory where school bags, bottles and other materials were kept."The officer further said the fire was of "medium category" and had been completely doused.Rescue operations are now underway".
Samar said a number of small, unauthorized factories had been renting out space in the building, and that the complete lack of safety provisions was widely known. "Electricity meters on the ground floor are absolutely intact". Thirty fire trucks are at the site and have taken the situation under control.
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