Ten dead as Bangladesh's capital Dhaka is rocked by second clothing factory fire in six months

Officials had pledged to improve safety standards after the Rana Plaza blaze in April this year

A fire killed 10 people at a garment factory in Bangladesh about six months after a factory building collapse that killed 1,100 people exposed the harsh and often unsafe conditions in an industry that is the world's third-largest.

Authorities and global clothing companies have pledged to improve safety standards in Bangladesh's garment industry after the Rana Plaza collapse and numerous other fatal accidents.

The cause of the fire at the Aswad garment factory in Gazipur outside Dhaka was not immediately known, but the government was investigating.

The fatalities included the general manager, Rashiduzzaman Mandal, said fire official Zafar Ahmed. He said the fire was doused early Wednesday after firefighters labored 10 hours to bring it under control.

Factory director Emdad Hossain said 170 workers were inside the factory when the fire started and most were able to escape. Hossain said he suffered slight injuries himself.

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.

The relative of a Bangladeshi garment factory worker cries at the scene of a factory fire (Reuters) (AP)