At least 6 people have been found dead in a fire engulfed at a textile factory in Muktarpur area of Munshiganj Sadar upazila.
Four fire-fighting units from Munshiganj and Narayanganj are working at the scene to put out the flames.
Sources said the fire left the factory severely damaged.
A few other workers are still missing, so the death toll may rise.
The fire originated from the first-floor of the factory building, where chemicals were stored.
Renovations were going on the same floor, where welders were at work, when a spark caused the fire at the chemical warehouse, which spread to other parts soon after.
Police officials said the victims did not die from the fire rather suffocated from the fumes of the chemicals.
Police detained four officials of the mill, including the general manager.