Seventy-five people were injured when the floor of the Jakarta Stock Exchange collapsed, Indonesian National Police spokesman Setyo Wasisto told AFP. Hospital figures put that number at 77.

Dramatic photos on social media showed the aftermath of the collapse, with victims lying on the ground outside the complex. Other pictures showed glass and metal debris inside the building.

13:04 Selasar lantai 1 gedung Bursa Efek Jakarta roboh, sejumlah pengunjung & pekerja telah di evakuasi. pic.twitter.com/9g5FRrP6Lc — TMC Polda Metro Jaya (@TMCPoldaMetro) January 15, 2018

"I saw many people bleeding," student Rizki Noviandi, who was taking part in a competition inside the building, told Metro TV. "So many people were carried out of the building and were left on the grass outside... until the ambulances arrived."

Bursa efek Indonesia telah terjadi musibah#BursaEfekIndonesiapic.twitter.com/m9Xnuogwuj — Ridwan Syahputra (@RidwanSPTR) January 15, 2018

The incident occurred after a mezzanine floor of the building crashed into the lobby. Wasisto said the collapse was an accident, and not the result of an explosion.

Scene at Jakarta stock exchange now pic.twitter.com/aHJCfW2oFU — Adam Harvey (@adharves) January 15, 2018

Selasar atap Tower II Bursa Efek Indonesia (BEI), Senayan, Jakarta, roboh pada 15/1/2018 pukul 12.10 Wib. Puing menimpa sejumlah orang yang berada di bawahnya. Beberapa korban luka dirawat di RS Mintoharjo, RSPP dan MRCCC. #BreakingNews#ElshintaHotNews # pic.twitter.com/1Qy2ElRQz6 — Sutopo Purwo Nugroho (@Sutopo_PN) January 15, 2018

"Our search and rescue teams, the police, doctors, the firefighters are all still working," Wasisto said. "They are cleaning the debris and also searching for other possible injuries."

Information released by five local hospitals put the number of people injured at 77, AP reported. They mostly sustained injuries to their legs and arms, including broken bones, a spokesman for one local hospital told AFP.

Gedung Bursa Efek Jakarta, lantai 2 gedung BEI runtuh. Sejumlah pengunjung di Gedung Bursa Efek Indonesia dan sedang dalam upaya evakuasi, Senin siang (15/1). (P. Ncek) #ElshintaHotNewspic.twitter.com/SK3DaQ1sZL — Radio Elshinta (@RadioElshinta) January 15, 2018

Hundreds of employees were evacuated from the complex, which was the target of a car bomb attack by Islamist militants in 2000. At least 10 people were killed and dozens injured in that attack.

Despite Monday's incident, trading continued as usual in the afternoon session.