A fire broke out in north Delhi's Anaj Mandi area on Monday in the same building where a blaze killed 43 people a day earlier, Delhi Fire Service officials said.
The fire department officials said they received a call about the blaze at around 7.50 am after which two fire tenders were rushed to the scene.
Some material stacked inside the building caught fire.
However, the blaze was brought under control within 20 minutes, they said.
A massive fire in the same four-storey building comprising illegal factories killed 43 and injured 16 workers on Sunday.