The issue is impacting all of Facebook's apps.
Facebook released a statement around 2 p.m., after many users had been experiencing the outage for around 2 hours, stating, "We're aware that some people are now having trouble accessing the Facebook family of apps".
While there has been speculation that the site may have been targeted by a distributed denial-of-service (DDoS) attack, the firm said this is not the case.
On Wednesday's issue, Ms Brooker added on Twitter: "Look at what happens when we let one company control everything".
The social media giant, which owns Instagram, said it was aware of issues people were having with Facebook's suite of apps.
When attempting to log in to the site, some users were greeted by a message stating "Facebook will be back soon".
The outages appeared to be concentrated in the Americas and Europe.
According to the website downdetector.com, Facebook was having issues since 11.56am EDT. According to the message, Facebook will be up and running "within a few minutes" but people are still reporting problems with the site. WhatsApp is in the Facebook family of products too, but it seems to be working.
Facebook takes to Twitter to explain outages. That outage was the second time that month.
This is a developing story and will be updated as more information becomes available.