Facebook, Instagram and Whatsapp are all reportedly down this afternoon, leaving users unable to access any of their social media accounts.
Hundreds have taken to Twitter to report the issues after all three sites stopped working.
Those hoping to log on are being presented with an error message saying the site "can't be reached", reports MirrorOnline.
Downdector.co.uk has received more than 100 complaints since 11am on Sunday. It is not clear at this stage what the problem is.
The outages are being reported world wide.
Anyone trying to log on to either of the sites are being met with an 'can't be reached' message.
Facebook's error seems to be worldwide as users on Twitter report problems as far as Croatia.
