According to a Sky news report, millions of users in the UK, US, Asia and Australia are unable to log into their Facebook, Tinder and Instagram accounts.
The report says that websites including Facebook, Tinder and Instagram have gone down – leaving millions of users worldwide unable to log in.
Instagram – owned by Facebook – said on its Twitter account that it is aware of an outage and is working on a fix.
There was no immediate statement from Facebook.
Facebook had 1.25 billion monthly active users at the end of September.