Late last night, 27 days before its officially scheduled retail release, a complete version of Microsoft's upcoming first-person shooter Halo 2 was leaked to the Internet. The pirated release, a PAL version of the game with French-language dialogue, is currently making its way around various Usenet newsgroups and peer-to-peer networks.

In a statement that Microsoft is sending only to media outlets that request comment, it admits the game "has been posted to various newsgroups and web sites."

While Microsoft says it is "currently investigating the source of this leak with the appropriate authorities," there has been no word on precisely where or how the game originally surfaced at this time, although Microsoft says it is actively tracing the leak. "Microsoft takes the integrity of its intellectual property extremely seriously, and we are aggressively pursuing the source of this illegal act."