Five people have died in a ferocious blaze, which has engulfed a skyscraper in the capital of Bangladesh.
The huge fire is raging through FR Tower, an office block in Dhaka and home to some of the country's largest businesses.
Live TV footage has showed people jump out of windows.
Five people, including a student, have died.
Dozens are thought to be injured at around 1pm local time, and others are feared trapped.
"Nineteen firefighting units of the Dhaka Fire Service and Civil Defense are trying to douse the fire," a firefighter said.
Another source said: "There are 95 emergency services working and helicopters hovering above.... trying to rescue some people from the roof as well."
The Air Force and Bangladesh Navy have rushed to the upmarket business district's FR Tower, home to banking firms, estate agents and internet service providers.
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Built in 2005, FR Tower houses major firms in banking, property and catering.
Footage broadcast in Bangladesh, which Mirror Online has decided not to publish, has shown people jumping out of windows.
Desperate relatives and witnesses can be seen crying in despair outside.
One panicked mum is worried for her daughter who works in an office at FR Tower.
"The last contact we had is that she said there were massive fumes and that it was difficult breathing. Now, we can’t reach her through phone," she said.
Victims have been dashed to hospital.
The nature of the injuries are not yet known.
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Other clips show large chunks of debris clatter off the building and tumble to the ground.
Photos show people clinging to cables on the building's exterior as they tried to climb to safety.
Thick black smoke can be seen for miles around Dhaka, one of the most densely populated cities in the world.
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Helicopters have been pictured dropping water on the burning tower.
One witness, Shoikot Rahman, told local media: "When I heard a fire broke out in the building, I quickly rushed out of the building.
"Many of my colleagues are still trapped in the office."
The fire started at around 12.45pm local time in the 19-storey skyscraper.
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It is unclear how it started.
Fears are growing adjacent buildings could also catch fire.
It comes after a devastating blaze in the same city killed 80 people last month.
Dhaka is populated by more than eight million people.
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