A fire in a textile factory in Bangladesh killed six workers on Wednesday before it was extinguished, police said, renewing fears about safety in the multi-billion dollar industry.

Rahman said the fire originated from the factory’s chemical godown on the first floor of the building which subsequently spread to other parts soon.

Local people are still doubtful about the death toll as nobody from the locality is being allowed to enter the building.

The fire service said the blaze may have been caused by sparks from welding work with flammable chemicals stored in a warehouse.

According to him, the victims did not die from the fire rather suffocated from the fumes of the chemicals.

Meanwhile, firefighters recovered six bodies from the textile mill, said the police official.

In July a fire triggered by a boiler explosion killed 13 people and injured 50 more at a factory in Gazipur, an industrial district just north of the capital Dhaka.

Bangladesh has more than 4,500 garment factories, employing four million mostly female workers.

The country suffered an even greater tragedy in 2013 when the Rana Plaza garment complex collapsed on the outskirts of Dhaka, killing 1,135 people, after another clothing factory building collapsed, trapping over 3,000 workers.