Facebook and the two other social apps, WhatsApp and Instagram owned by Facebook, are back since they crashed on Monday by 4:25pm.
The social networking sites founder, Mark Zuckerberg on his page, apologised for the downtime experienced by users of the services.
He wrote on his Facebook page: “Facebook, Instagram, WhatsApp and Messenger are coming back online now. Sorry for the disruption today — I know how much you rely on our services to stay connected with the people you care about.”