Dhaka , Bangladesh ( CNN ) -- At least seven people were killed and dozens other injured in a large fire that broke out late Tuesday at a knitwear factory on the outskirts of the capital , officials said . Muhammad Mahbub , director ( operations ) of Bangladesh Fire Service and Civil Defence , told CNN that rescuers had pulled some charred bodies out of smoldering debris at the factory in in Sripur . The cause was not immediately known . Mahbub said nearly a dozen fire engines were trying to put out the flames , but it was yet to be under control at 2 a.m. Wednesday . Fire broke out at Aswad Knit Composite Mills Ltd in Sripur , some 60 kilometers ( 37 miles ) north of Dhaka . The fire began in the knitting unit and later spread to three other buildings in the compound , officials said . Officials said the factory was closed , but some people were doing additional work at night . Bangladesh earns about $ 20 billion a year , 80 % of the total export , by selling clothes to European and American brands . Workers in Bangladesh allege poor pay and substandard working condition in many factories . In April 2013 , more than 1,100 people were killed when an eight-story apparel factory building caved in and collapsed in Savar .
Fire broke out in a factory north of Dhaka . At least two were dead . The cause was not immediately known .