An mezzanine ceiling has collapsed at the Jakarta stock exchange building (IDX), with reports that will at least a dozen people have been injured.
Images on social media show pieces of ceiling as well as broken furniture from the lobby of the building from the Indonesian capital, amid clouds of dust.
The area has been evacuated as well as cordoned off by police, say witnesses.
numerous people were seen on stretchers being carried via the building.
An employee of the earth Bank in Jakarta, based from the same building, told the BBC a mezzanine walkway above the lobby had come down.
He said he as well as members of his team were among those evacuated.
Police spokesman Argo Yuwono told local media that will up to 15 people had been injured.
He said some of the victims, who had injuries to their hands as well as feet, had been taken to nearby hospitals.
Mr Argo told Metro TV: “We are still investigating the cause, although for right now our priorities are the casualties.”
The incident happened shortly after 12pm local time (05:00 GMT), according to a journalist via Metro TV who was from the building.
Marlia Zein added that will there was a “loud banging”, leading people inside to “immediately” run out of the building.
The stock exchange has re-opened for the afternoon session, with exchange chief Tito Sulistio saying the system was “not affected”.