Facebook began experiencing disruptions around 10pm, according to tracking website downdetector.com, with Instagram and WhatsApp experiencing disruptions around the same time.
The site's outage map reflected that several parts of North America and South-east Asia were affected.
Besides Singapore, Malaysia also seemed to be affected.
Facebook later said in a statement that it was aware of the issues and was working on a fix.
“During one of our routine maintenance operations, we triggered an issue that is making it difficult for some people to upload or send photos and videos,” a Facebook representative said.
“We’re working to get things back to normal as quickly as possible and we apologise for any inconvenience.”
We’re aware that some people are having trouble uploading or sending images, videos and other files on our apps. We're sorry for the trouble and are working to get things back to normal as quickly as possible. #facebookdown
Users took to social media platforms such as Twitter to post about the outage, adding that pictures and posts were not loading on Instagram, and they had trouble sending and receiving messages on WhatsApp.
Content including videos, status and log-in features were also disrupted.
Twitter user Karen Sam added a screenshot of Facebook's login page and said that she was unable to access it.
Another Twitter user Stephen White stated that he was not able to move past a screen requesting him to secure his account when he logged into the application.
"I've also seen that I'm not the only one today so any chance you can help correct this issue," he said, tagging Facebook's Twitter handle in the post.
Facebook, which owns Instagram and WhatsApp, shares systems across the three applications.
