Soon after receiving the report, 15 fire tenders were rushed to the spot to douse the fire and to carry out rescue operations. So far, 14 people have been rescued out of which 11 have been admitted to hospital.
Fire Services chief Atul Garg said the blaze was put out by 25 fire trucks and that the rescue operation was completed. It is a factory where school bags, bottles and other materials were kept.
Dr. Kishore Singh said rescuers brought victims to his government-run hospital and two others in the city.
Scores of injured people are now being treated in the city's hospitals. Many are still feared trapped in the building.
The death toll is likely to climb as numerous injured have suffered grievous injuries, according to fire and police officials.
Chaotic scenes were witnessed at the site of the fire incident with relatives and locals rushing to the area. Firemen doing their best. "I got a call from his friend informing that he has been injured in the incident".
According to a man whose three nephews were working at the factory, "At least 12-15 machines were installed in the unit". "My nephews Mohammed Imran and Ikramuddin were inside the factory". Delhi chief minister Arvind Kejriwal on Sunday described the fire incident in Delhi's Anaj Mandi area as "tragic" and said firemen were doing their best. According to him, many units were operating from the premises which was located in a congested area.
"Till now we have rescued more than 50 people, a lot of them were affected due to smoke", ANI quoted Atul Garg, Chief Fire Officer, Delhi Fire service as saying.
Thirty four people have been reported to be dead in LNJP hospital and nine in Lady Harding Hospital, an official figure from the two hospitals reveals. They are in stable condition, Singh said. We have so far sent 15 people to the LNJP hospital for medical aid.
Conveying deepest condolences with the kin of the deceased, Shah tweeted, "Tragic loss of precious lives in the fire accident in New Delhi". May the injured recover quickly.
Prime Minister Narendra Modi termed the incident extremely horrific and said that authorities are providing all possible assistance.
Saddened at the news that a massive fire in the Anaj Mandi area of Delhi has claimed many lives and left several people injured, Gandhi said in a tweet in Hindi.