Some reported seeing a message indicating that the site was carrying out maintenance

Facebook appears not to be working for some users.

The site appears not to load for many of its users, instead just showing a blank page.

Some users celebrated that they might be able to get some of their time back.

But others complained that the site might force them to use the app instead. That does appear to be loading, at least more reliably than the site.

The issue appears to be most concentrated with people in the UK and Europe, according to the Down Detector website.

Some people reported that they have been seeing an error message over the weekend, before the widely-reported problems.

"Facebook is down for required maintenance right now, but you should be able to get back on within a few minutes," the message reads. "In the meantime, read more about why you're seeing this message. Thanks for your patience as we improve the site.'