Facebook has suffered a service disruption that's making the website unavailable to some users.
Some visitors to the site were greeted with a message that read "Sorry, something went wrong. We're working on getting this fixed as soon as we can."
It was not immediately clear how widespread the disruption was.
Facebook has 1.32 billion monthly users.
"We're aware that some people are currently having trouble accessing Facebook. We're working to get things back to normal as quickly as possible," a Facebook spokesman said in a statement.
Reuters said it was aware of users having trouble accessing the site in the United States, Chile and India.