"The firefighters have removed nine bodies", a Delhi Fire Service official said.
Fire Services officials said that many people were still reportedly trapped inside the building as they made desperate attempts to rescue them.
At least 17 workers have died after a massive fire broke out at a firecracker factory on the northern outskirts of the Indian capital.
Meanwhile, the police have disagreed on the death toll claimed by the fire department, and said four people have been killed in the fire.
Expressing his grief over the "large number of casualties" in the fire, chief minister Kejriwal said he is keeping a "close watch" on the rescue operations. "May those who are injured recover quickly", the Office of Prime Minister of India tweeted.
North Delhi Mayor, Preeti Agrawal told ANI, "I received information about the incident on phone at around 9 pm & we immediately rushed to the spot".
On 16 January, a factory in Delhi's Udyog Nagar was gutted in a fire.
Delhi Urban Development minister Satyendar Jain said an inquiry has been ordered into the incident.
A dozen fire engines took three hours to extinguish the blaze in the Bawana industrial area of New Delhi. "Several casualties reported. Monitoring the situation.Ordered enquiry".