A fire broke out at Jurong East shopping mall Jem on Tuesday (July 19) evening.
Mr Clinton Chen, who sent in photos and videos of the fire to The Straits Times, said the blaze broke out at basement one.
The level was closed to the public and shoppers were told to evacuate the building.
The Singapore Civil Defence Force said the fire has been extinguished.
The cause of the incident is still under investigation.
No injuries were reported.
Mr Chen said access to basements two and three, and level one and above have resumed, but many shops remained closed.