Farhaduzzaman, another fire official, said the fire spread to two buildings that housed garment factories belonging to the Palmal Group of Industries.
Another garment factory fire last November killed 112 workers in a building authorities said did not have enough exits.
Bangladesh earns $20 billion a year from garment exports, mainly to the United States and Europe. The sector employs about 4 million workers, mostly women.
An engineering survey shown to The Associated Press after the Rana Plaza collapse showed many Bangladesh garment factories added floors that the building foundations couldn't support and were located in converted residential buildings not designed to withstand use of heavy equipment.
- AP