TWITTER is back up and running following six hours of the site being down.

The social media outlet updated its users at 4.32am this morning.

It announced:  "And we’re all clear –– Twitter should be working as expected for everyone. Thanks for sticking with us."

Read more: Twitter down: Users unable to tweet as service is 'temporarily over capacity'

It was confirmed that a system change that was initiated earlier than planned is what caused the issues. 

Users earlier reported error messages including “something went wrong” and “Tweet failed: There’s something wrong. Please try again later.”