DHAKA, Bangladesh (AP) — A fire swept through a high-rise office building in Bangladesh’s capital on Thursday, killing at least 19 people and injuring about 70 others, officials said. The blaze trapped many people inside the building, with some shouting for help from windows on the building’s upper floors and from the roof.

At least one person fell to the ground while trying to climb down the building.

Fire officials said after battling the blaze for several hours that most people inside had been rescued.

“The situation is under control,” said Debashish Bardhan, a Fire Service and Civil Defense deputy director.

The fire at the FR Tower, on a busy avenue in Dhaka’s Banani commercial district, was the latest in a city where flouted building regulations and safety norms have made deadly blazes common.

Firefighters shattered the building’s glass walls to free toxic gas.

A Facebook Live video taken by Roy Pinaki showed five people climbing down from windows while burned building materials fell around them. One person slipped from what appeared to be a rope that people were using to escape, bounced off utility wires and fell to the ground.

Military helicopters joined the rescue operation, and one person dangled from a helicopter hovering over the roof as thick plumes of smoke rose.

More than a dozen people who fled to the roof were rescued by firefighters using hydraulic cranes, Bardhan said.

Witness Sajib Hasan said some people shouted for help from the upper floors of the building. Onlookers shouted back encouragement, some raising their hands to pray for the safety of those trapped. Heavy smoke deterred efforts by responders, but Hasan said he watched at least a dozen people rescued.

Banani, the area where the fire broke out, is a busy commercial district with multistory buildings housing offices, universities and restaurants.

Dilip Kumar Ghosh, deputy director of the fire service, said heavy traffic delayed the arrival of firetrucks at the building.

Tushar-or-Rashid, an employee of the Vivid Holidays tour company on the building’s first floor, said the fire began above the firm’s location.

“All of our staff have come out safely but we don’t know what happened to the people who work in the upper floors,” he said. Rashid said the building has 21 floors.

Fires are common in Bangladesh. Last month, a fire in the oldest part of Dhaka, a 400-year-old area cramped with apartments, shops and warehouses, left at least 67 people dead.

In 2012, a fire raced through a garment factory on the outskirts of Dhaka, killing at least 112 people trapped behind its locked gates. Less than six months later, another building containing garment factories collapsed, killing more than 1,100 people.

Another fire in a house illegally storing chemicals in Old Dhaka killed at least 123 people in 2010.

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