Videos shared online showed them jumping off the ledge of the Wisma Mustapha Kamal office building to escape the raid.

One of them could be seen being wrestled to the ground by an immigration officer.

The raid was was part of an operation against an online scam syndicate run by Chinese nationals, where 680 people, including 77 women, were arrested.

Authorities also confiscated 8,230 mobile phones, 174 laptops and 787 computers.

“During the raid, the Chinese nationals were carrying out their activities.

“Some of them attempted to attack immigration officers, with some 100 people managing to escape,” said immigration director-general Khairul Dzaimee Daud.

He said many of the detainees as well as those who escaped were injured.

It is believed that the syndicate had been operating for six months from an office which it rented for RM360,000 a month.

He said the office was used as its call centre, targeting victims in China using Wechat Pay or Chinese banks for their transactions.

The call centre was secured with security guards, CCTVs and access cards.

Khairul said initial probe showed the detainees came to Malaysia on social visa, adding that nearly all of them failed to produce a passport.

He said the Chinese embassy has been contacted on the matter.