An eight-story building housing garment factories collapsed near Bangladesh's capital Wednesday, killing at least 87 people, ABC News reported.
The Rana Plaza building contained several clothing factories, a bank and a market, BBC News reported.
More than 600 people were injured in the event, and the death toll is expected to rise, BBC News reported.
"I gave them whistles, water, torchlights, I heard them cry," fir official Abul Khayer said about his rescue efforts. He said rescue missions to find survivors still trapped inside the collapsed building would continue through the night, ABC News reported.
Because Bangladesh's multi-story blocks are built in violation of regulations, building collapses commonly occur in the country, BBC News reported.
Workers said they hesitated going to work because of the large cracks in the building, which had been reported on local news channels, ABC News reported.
The collapse comes less than five months after a factory fire killed 112 people, eliciting greater concern for the Bangladesh garment industry's unsafe working conditions, ABC News reported.