NEW DELHI, April 17 (Xinhua) -- At least two people were killed in a devastating fire inside crockery factory in Indian capital city of New Delhi, officials said Tuesday.

The massive blaze broke out in a crockery-manufacturing factory in Uttam Nagar on Monday night.

"The fire broke out in the factory at around 11:00 p.m. (local time) and soon engulfed the entire building," a police official said. "Firefighters along with five fire tenders were rushed to the spot immediately to contain the blaze, which was brought under control after several hours. Unfortunately two people, who were working as workers in the factory, were killed in the fire."

According to officials, the workers were sleeping inside the building when the fire broke out.

Police said the cause of fire and extent of damage was being ascertained.

Chances of fire in Indian factories and buildings are often high as owners usually ignore safety standards vis-a-vis fire.