Updated January 15, 2018 10:15 a.m. EST
JAKARTA, Indonesia – A mezzanine inside the Stock Exchange tower in Jakarta collapsed on Monday, injuring nearly 80 people and forcing a chaotic evacuation.
Images of the security camera that circulated online showed the collapse, with a group of people throwing themselves several meters (feet) to the ground when the structure gave way under their feet.
People fled the building through a hall covered in rubble. Emergency personnel treated the injured on the grass and the pavement outside the tower.
National police spokesman Setyo Wasisto said most of the wounded were university students from Palembang in Sumatra who were visiting the stock exchange as part of a study tour.
Wasisto dismissed terrorism as the cause of the collapse.
"There is no bomb element in the incident," he said.
Figures published by five hospitals showed that 77 people were injured.
A spokeswoman for the Siloam Hospital in Jakarta said she had received more than two dozen victims.
A university student from Palembang said he felt a tremor just before the floor collapsed.
"The structure collapsed suddenly, causing chaos," the student, identified as Ade, told MetroTV.
She said that some of her friends were hit by debris and suffered head injuries and broken bones.
The stock exchange remained open for its afternoon trading session and its general manager, Tito Sulistio, said no one had been killed.
"I guarantee there were no deaths," he said. "I helped evacuate the victims to the park and as far as I know, the worst injuries are fractures."
He said that the exchange will pay the medical costs of the students.
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