Firefighters were still working on Sunday to put out a massive blaze that killed at least 41 people at a container depot in southeast Bangladesh, the latest incident highlighting the country’s poor industrial safety track record.

The fire that also injured more than 150 broke out at the container facility on Saturday night at Sitakunda, 40 km (25 miles) from the port city of Chittagong, triggering a huge blast and multiple container explosions, officials said.

Chemical-filled containers were still exploding on Sunday as firefighters were attempting to douse the fire and officials said the army had joined the mission.

Explosions had shaken the neighbourhood and shattered windows in nearby buildings, local residents said.

The death toll could rise as some of the injured are in a critical condition, said Chittagong civil surgeon Mohammed Elias Hossain. The injured included firefighters and policemen, he said.

He said all doctors in the district had been called in to help tackle the situation, while social media was flooded with appeals for emergency blood donations.

Five firefighters had died and at least 50 others, including 10 policemen, were injured, he added.

Hundreds of distraught relatives rushed from one hospital to another in a frantic search for their loved ones, witnesses said.

It was not immediately clear what had caused the blaze. Fire service officials said they suspected it may have originated in a container of hydrogen peroxide and spread quickly to other containers.

Newton Das, a fire service official, said containers were still exploding on Sunday afternoon, containing hydrogen peroxide and others containing sulphur. “It’s really getting harder as toxic fumes engulfed the area,” he said.

Bangladesh has prospered over recent decades to become the world’s second-biggest exporter of garments, but the infrastructure and institutional focus for industrial safety is still nascent, the International Labour Organisation said earlier this year.

Lax regulations and poor enforcement of rules have been blamed for several large fires that have led to hundreds of deaths in recent years.

In 2020, three people were killed after an oil tank exploded at a container depot in Chittagong’s Patenga area, while in July last year, 54 died when an inferno ripped through a food processing factory outside the capital Dhaka.

At least 70 died in a fire that engulfed several buildings in a centuries-old neighbourhood of Dhaka in 2020.