A lengthy story breakdown for Mass Effect 3 has been leaked online, developer BioWare has confirmed.
The document was mined from a beta version of the game that, as reported earlier today, accidentally made its way onto Xbox Live over the weekend.
The document was reportedly found by Russian fansite Bioware.ru which posted it in full.
BioWare has confirmed the leak, but insisted that the document is not representative of how the finished game will turn out.
"We are still investigating, but it appears that some internal story files have been leaked," read a post on its forums.
"Even though the information in those files is out of date and does not reflect the final story experience, we urge fans not to read them if they want to experience the purest form of the story in Mass Effect 3."