The fire that broke out at building number 7 of Bangladesh Secretariat on early Thursday, was brought under control in the morning, the Fire Service officials said.
It took 19 units of the fire service and scores of fire fighters at least six hours to tame the blaze.
Inspector Anwarul Islam of the Fire Service and Civil Defence media cell said that 19 units worked to extinguish the fire.
The fire was brought under control at about 8:00 am Thursday, he added.
One of the fire fighters, named Nayan, died being hit by a truck during the efforts to control the blaze, officials said.
The fire service received information about the fire at the Secretariat building shortly after midnight of Wednesday.
The fire service unit at the Secretariat tried to control the fire from 1:55 am. A few minutes later, as the intensity of the fire increased, 19 units reached the spot and started working to control the fire.
At about 8:30 am, some smoke was seen rising from the space between the 8th and 9th floors on the east end of building number 7.