It's not yet clear is the issue is fully resolved, however many people are saying their Facebook is back working this morning.
Facebook posted to Twitter reassuring users that the site would be back online.
Facebook, on Twitter, last gave an update about ongoing outages on its platforms on it's platforms on Wednesday afternoon.
Things started breaking earlier this morning, with Facebook notifying users through Twitter that "some people are now having trouble accessing the Facebook family of apps".
The outage is occurring against a political backdrop of legislators in the United States and beyond considering whether large technology firms - not just Facebook - should be broken up.
Today, we're reporting that Aussies are once again calling their local authorities due to a social media outage, which is affecting users globally.
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The coordinated timing of the outages led to speculation Facebook had been hit by a distributed denial-of-service attack (DDoS), a common form of cyber attack that disrupts a site's services.
Angry users expressed their frustration on Twitter writing, "There is some serious problem with Instagram".
According to performance-monitoring firm Netscout, the issue appeared to be related to an accidental Border Gateway Protocol "routing leak" from a European internet service provider to a major transit ISP; the BGP error then cascaded across other service providers and downstream customers of the transit ISP.
Instagram also experienced issues, with some users unable to log into their accounts.
"We're working on getting it fixed as soon as we can", a message told many users as they tried to post content.